{"title":"Airsoft AEG Inner Barrels","description":"\u003cspan style=\"font-weight: 400\"\u003eShop our 6.02mm AEG barrels for your airsoft gun today! Whether you need to repair or upgrade your airsoft gun, our range of barrels is the perfect solution.\u003c\/span\u003e","products":[{"product_id":"zci-550mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 550mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 550mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 550mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849178308943,"sku":"j-16","price":29.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-550mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987853"},{"product_id":"zci-407mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 407mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 407mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 407mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849178407247,"sku":"j-10","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-407mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987855"},{"product_id":"zci-363mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 363mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 363mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 363mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849178603855,"sku":"j-27","price":27.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-363mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987858"},{"product_id":"zci-275mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 275mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 275mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 275mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849178734927,"sku":"j-26","price":23.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-275mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987861"},{"product_id":"zci-247mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 247mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 247mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 247mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849178865999,"sku":"j-03","price":22.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-247mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987863"},{"product_id":"zci-229mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 229mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 229mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 229mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849179029839,"sku":"j-01","price":22.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-229mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756987867"},{"product_id":"zci-300mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 300mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 300mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 300mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183486287,"sku":"j-08","price":23.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-300mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988044"},{"product_id":"zci-380mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 380mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 380mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 380mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183519055,"sku":"j-09","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-380mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988046"},{"product_id":"zci-455mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 455mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 455mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 455mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183551823,"sku":"J-12","price":25.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-455mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988049"},{"product_id":"zci-469mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 469mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 469mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 469mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183715663,"sku":"J-13","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-469mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988051"},{"product_id":"zci-494mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 494mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 494mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 494mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183879503,"sku":"J-14","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-494mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988053"},{"product_id":"zci-509mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 509mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 509mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 509mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849183977807,"sku":"j-15","price":27.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-509mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988056"},{"product_id":"zci-260mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 260mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 260mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 260mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849195053391,"sku":"j-04","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-260mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988190"},{"product_id":"zci-285mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 285mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 285mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 285mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849195249999,"sku":"j-06","price":23.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-285mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988193"},{"product_id":"zci-433mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 433mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 433mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 433mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849195512143,"sku":"j-11","price":26.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-433mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988195"},{"product_id":"zci-499mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 499mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 499mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 499mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849195577679,"sku":"j-28","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-499mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988198"},{"product_id":"zci-715mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 715mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 715mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 715mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849195807055,"sku":"J-18","price":35.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-715mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988200"},{"product_id":"zci-294mm-stainless-steel-6-02mm-airsoft-inner-barrel","title":"ZCI 294mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 294mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 294mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849199116623,"sku":"j-07","price":23.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-294mm-stainless-steel-6_02mm-airsoft-inner-barrel-zci.jpg?v=1756988277"},{"product_id":"zci-200mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 200mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 200mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 200mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849201901903,"sku":"j-34","price":22.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-200mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988355"},{"product_id":"zci-340mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 340mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 340mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 340mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849202000207,"sku":"j-35","price":24.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-340mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988358"},{"product_id":"zci-240mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 240mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 240mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 240mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849202622799,"sku":"j-02","price":22.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-240mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988371"},{"product_id":"zci-263mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 263mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 263mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 263mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849202721103,"sku":"j-29","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-263mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988373"},{"product_id":"zci-450mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 450mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 450mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 450mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849202753871,"sku":"J-30","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-450mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988375"},{"product_id":"zci-270mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 270mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 270mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 270mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849256362319,"sku":"j-05","price":23.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-270mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988707"},{"product_id":"zci-487mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 487mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 487mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 487mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849268683087,"sku":"J-37","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-487mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988838"},{"product_id":"zci-430mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 430mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 430mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 430mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849268715855,"sku":"j-36","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-430mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756988841"},{"product_id":"zci-650mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 650mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 650mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 650mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849454117199,"sku":"j-17","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-650mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756991002"},{"product_id":"prometheus-110mm-6-03mm-barrel","title":"Prometheus 110mm 6.03mm barrel","description":"PROMETHEUS  EG barrel series \u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n110mm long Ideal for MP5K's and other shorter barrel weapons","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849493242191,"sku":"4582109580141","price":44.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-110mm-6_03mm-barrel-prometheus.jpg?v=1756991274"},{"product_id":"prometheus-141mm-6-03mm-barrel","title":"Prometheus 141mm 6.03mm barrel","description":"Prometheus 141mm 6.03mm barrel\u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n141mm long Ideal for MP5 PDWs and other shorter barrel weapons","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849493668175,"sku":"4582109580134","price":44.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-141mm-6_03mm-barrel-prometheus.jpg?v=1756991279"},{"product_id":"prometheus-185mm-6-03mm-barrel","title":"Prometheus 185mm 6.03mm barrel","description":"Prometheus 185mm 6.03mm barrel\u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n185mm long Ideal for M4 PMC's and other shorter barrel weapons","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849494290767,"sku":"4560282763858","price":44.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-185mm-6_03mm-barrel-prometheus.jpg?v=1756991284"},{"product_id":"prometheus-208mm-6-03mm-barrel","title":"Prometheus 208mm 6.03mm barrel","description":"Prometheus 208mm 6.03mm barrel\u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n208mm long","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849494651215,"sku":"4582109580479","price":44.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-208mm-6_03mm-barrel-prometheus.jpg?v=1756991288"},{"product_id":"prometheus-135mm-6-03mm-barrel","title":"Prometheus 135mm 6.03mm barrel","description":"Prometheus 135mm 6.03mm barrel\u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n135mm long For Krytac SDP nd other 135mm barrel guns","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849494782287,"sku":"4571443141019","price":44.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-135mm-6_03mm-barrel-prometheus.jpg?v=1756991295"},{"product_id":"prometheus-155mm-6-03mm-barrel","title":"Prometheus 155mm 6.03mm barrel","description":"Prometheus 155mm 6.03mm barrel\u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n155mm long For Krytac PDW and Kriss Vector and other 155mm barrel guns\u003cbr\u003e\r\nAEG Fitting","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849494946127,"sku":"4571443141026","price":45.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-155mm-6_03mm-barrel-prometheus.jpg?v=1756991299"},{"product_id":"shspps-500mm-6-03-stainless-barrel","title":"SHS\/PPS 500mm 6.03 Stainless Barrel","description":"SHS \/ PPS Precision inner barrel 500mm Long with 6.03mm bore","brand":"PPS","offers":[{"title":"Default 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Title","offer_id":53849656885583,"sku":"4582109580103","price":55.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-285mm-6_03mm-barrel-prometheus.jpg?v=1756993054"},{"product_id":"prometheus-300mm-6-03mm-barrel","title":"Prometheus 300mm 6.03mm barrel","description":"PROMETHEUS  EG barrel series \u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n300mm long Ideal for AA-12 · HK417 · SCAR · M734 · Thompson and more","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849656951119,"sku":"4582109580448","price":55.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-300mm-6_03mm-barrel-prometheus.jpg?v=1756993059"},{"product_id":"prometheus-318mm-6-03mm-barrel","title":"Prometheus 318mm 6.03mm barrel","description":"PROMETHEUS  EG barrel series \u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n318mm long Ideal for 11.5 inch Magpul Masada and other weapons needing 318mm . barrel","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849657246031,"sku":"4560329176276","price":55.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-318mm-6_03mm-barrel-prometheus.jpg?v=1756993065"},{"product_id":"prometheus-363mm-6-03mm-barrel","title":"Prometheus 363mm 6.03mm barrel","description":"PROMETHEUS  EG barrel series \u003cbr\u003e\r\n1\/100mm precision dimensional tolerances.\u003cbr\u003e\r\n363mm long Ideal for 11.5 inch Magpul Masada and other weapons needing 318mm . barrel","brand":"Prometheus","offers":[{"title":"Default Title","offer_id":53849657803087,"sku":"4582109580097","price":55.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/prometheus-363mm-6_03mm-barrel-prometheus.jpg?v=1756993070"},{"product_id":"zci-400mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 400mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. This barrel is 400mm long with a 6.02mm internal diameter, a little tighter than the 6.05 to 6.08mm found in most stock barrels.\u003c\/p\u003e\u003cp\u003eA tighter bore means less air escapes around the BB, which usually gives more consistent shots and a small rise in FPS. Stainless steel is also stiffer and smoother than brass, and it won't corrode, so it stays consistent over time.\u003c\/p\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ZCI\u003c\/li\u003e\n\u003cli\u003eLength: 400mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.02mm (tight bore)\u003c\/li\u003e\n\u003cli\u003eMaterial: stainless steel\u003c\/li\u003e\n\u003cli\u003eFits: Tokyo Marui-compatible AEGs that take a standard AEG inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel, or check your gun's manual, to make sure you order the right length. A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53849966379343,"sku":"j-c-400","price":26.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-400mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1756999770"},{"product_id":"zci-128mm-stainless-steel-6-02mm-inner-barrel","title":"ZCI 128mm 6.02mm Stainless Steel Tight Bore Inner Barrel","description":"\u003cp\u003eSwapping the stock brass inner barrel for a ZCI stainless steel tight bore is one of the most popular first upgrades for an AEG. 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A tight bore can raise your FPS slightly, so always chrono afterwards and check it's within your site's limit. Clean a new barrel before fitting and use good quality, polished BBs.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/zci\"\u003eFull ZCI upgrade range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZCI","offers":[{"title":"Default Title","offer_id":53850641957199,"sku":"j-c-128","price":20.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/zci-128mm-stainless-steel-6_02mm-inner-barrel-zci.jpg?v=1757006979"},{"product_id":"unicorn-nitroflon-coating-6-03mm-aeg-inner-barrel","title":"UNICORN Nitroflon Coating 6.03mm AEG Inner Barrel","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch1\u003e\u003cspan\u003eUnicorn Airsoft AEG Nitroflon Coating 6.03mm Ultimate Precision Inner Barrel\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGive your AEG airsoft rifle a precision performance upgrade with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUnicorn Airsoft 6.03mm Ultimate Precision Inner Barrel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, featuring a specialised \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNitroflon coating\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed to provide an exceptionally smooth internal surface and consistent BB travel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eManufactured for airsoft players looking to improve the accuracy and consistency of their AEG, this \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6.03mm precision inner barrel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides a tighter and more consistent bore than many standard stock barrels. The Nitroflon coating helps create a smooth surface inside the barrel, reducing friction as the BB travels through it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA quality inner barrel is an important part of any AEG upgrade, particularly when combined with a good-quality hop-up rubber, precision bucking and consistent BBs. The Unicorn Ultimate Precision barrel is an excellent choice for players building a more accurate AEG for skirmishing, woodland games or target shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNitroflon coating\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is designed to provide a low-friction internal surface while helping maintain consistent BB movement through the barrel. 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Pair it with a quality hop-up rubber and bucking for a well-rounded accuracy upgrade.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether you're tuning a high-performance AEG or simply looking for a worthwhile upgrade for your everyday skirmish rifle, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUnicorn Airsoft 6.03mm Nitroflon Ultimate Precision Inner Barrel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is designed to deliver reliable and consistent performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eUpgrade your AEG's accuracy and consistency with Unicorn's Nitroflon-coated 6.03mm Ultimate Precision Inner Barrel.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1x AEG barrel \u003c\/strong\u003e\u003c\/p\u003e","brand":"Unicorn","offers":[{"title":"150mm","offer_id":58476485706063,"sku":"UC-IB-A-150","price":33.99,"currency_code":"GBP","in_stock":true},{"title":"200mm","offer_id":54245035016527,"sku":"UC-IB-A-200","price":35.0,"currency_code":"GBP","in_stock":true},{"title":"265mm","offer_id":54245035049295,"sku":"UC-IB-A-265","price":35.0,"currency_code":"GBP","in_stock":true},{"title":"285mm","offer_id":54245035082063,"sku":"UC-IB-A-285","price":35.0,"currency_code":"GBP","in_stock":true},{"title":"310mm","offer_id":54245035114831,"sku":"UC-IB-A-310","price":39.99,"currency_code":"GBP","in_stock":true},{"title":"370mm","offer_id":54245035147599,"sku":"UC-IB-A-370","price":49.0,"currency_code":"GBP","in_stock":true},{"title":"410mm","offer_id":54245035180367,"sku":"UC-IB-A-410","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/unicornaegairsoftbarrel.jpg?v=1786717883"},{"product_id":"action-army-6-01-aeg-barrel","title":"Action Army 6.01 AEG Barrel (Various Sizes)","description":"\u003cp\u003eAction Army Excel Tightbore AEG Inner Barrel 6.01mm\u003c\/p\u003e\n\u003cp\u003eSuitable for AEG Airsoft replicas.\u003c\/p\u003e\n\u003cp\u003eReduces vibration during firing\u003c\/p\u003e","brand":"Action Army","offers":[{"title":"250mm","offer_id":54720287146319,"sku":"9010109269148","price":24.0,"currency_code":"GBP","in_stock":true},{"title":"290mm","offer_id":54720287179087,"sku":"9010109269155","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"310mm","offer_id":54720287211855,"sku":"9010109269162","price":26.0,"currency_code":"GBP","in_stock":true},{"title":"370mm","offer_id":54720287244623,"sku":"9010109217088","price":27.99,"currency_code":"GBP","in_stock":false},{"title":"410mm","offer_id":54720287277391,"sku":"9010109269179","price":28.99,"currency_code":"GBP","in_stock":false},{"title":"455mm","offer_id":54720287310159,"sku":"9010109217095","price":28.99,"currency_code":"GBP","in_stock":false},{"title":"470mm","offer_id":54720287342927,"sku":"9010109269186","price":28.99,"currency_code":"GBP","in_stock":false},{"title":"540mm","offer_id":54720287375695,"sku":"9010109269193","price":29.99,"currency_code":"GBP","in_stock":false},{"title":"590mm","offer_id":54720287408463,"sku":"9010109217118","price":33.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/action-army-6_01-aeg-barrel-various-sizes-action-army.png?v=1757017467"},{"product_id":"silverback-brass-inner-barrel-aeg-cut-various-sizes","title":"Silverback Brass Inner 6.05mm Barrel AEG Cut (Various Sizes)","description":"\u003cp\u003eSilverback Brass Inner Barrel AEG Cut\u003c\/p\u003e","brand":"Silverback Airsoft","offers":[{"title":"330mm","offer_id":57638020972879,"sku":"SBA-IBL-A330","price":17.0,"currency_code":"GBP","in_stock":true},{"title":"420mm","offer_id":57638021005647,"sku":"SBA-IBL-A420","price":19.0,"currency_code":"GBP","in_stock":true},{"title":"510mm","offer_id":57638021038415,"sku":"SBA-IBL-A510","price":22.0,"currency_code":"GBP","in_stock":true},{"title":"578mm","offer_id":57638021071183,"sku":"SBA-IBL-A578","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/silverback-inner-barrel-AEG_1.jpg?v=1778088335"},{"product_id":"action-army-6-03mm-aeg-inner-barrel-various-sizes","title":"Action Army Excel 6.03mm AEG Tight Bore Inner Barrel (Various Lengths)","description":"\u003cp\u003eSwapping a stock inner barrel for a precision tight bore is one of the simplest ways to get more consistency from an AEG, and Action Army's Excel barrel is a popular choice. Its 6.03mm bore is tighter than the 6.05 to 6.08mm barrels most AEGs come with, so less air slips past the BB and each shot leaves the barrel more consistently. The result is tighter groups and, often, a small boost in FPS.\u003c\/p\u003e\u003cp\u003eThe barrel is made from copper with a smooth nickel-plated finish that reduces friction as the BB travels down the bore and resists wear over time. It's available in four common lengths, so you can match it to your rifle or step up to a longer barrel if your outer barrel allows.\u003c\/p\u003e\u003ch3\u003eChoose your length\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e290mm: MC51 style AEGs\u003c\/li\u003e\n\u003cli\u003e310mm: M733 and similar short carbines\u003c\/li\u003e\n\u003cli\u003e370mm: standard M4 and M4A1 carbines\u003c\/li\u003e\n\u003cli\u003e470mm: G3SG style rifles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Action Army\u003c\/li\u003e\n\u003cli\u003eRange: Excel tight bore\u003c\/li\u003e\n\u003cli\u003eInternal diameter: 6.03mm\u003c\/li\u003e\n\u003cli\u003eMaterial: copper with nickel plating\u003c\/li\u003e\n\u003cli\u003eSmooth, low-friction bore\u003c\/li\u003e\n\u003cli\u003eLengths: 290mm, 310mm, 370mm and 470mm\u003c\/li\u003e\n\u003cli\u003eFits: AEGs that take a standard Tokyo Marui-compatible inner barrel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eBefore you buy: measure your current inner barrel or check your gun's manual, as lengths vary between brands and models. A tighter bore can raise your FPS slightly, so always chrono after fitting and check you're within your site's limits.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eYou may also like\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-bearing-stainless-spring-guide-airsoft-v2\"\u003eZCI bearing spring guide (V2 gearbox)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/zci-30pc-airsoft-shim-set\"\u003eZCI airsoft shim set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/abbey-silicone-gun-oil-35-dropper-bottle\"\u003eAbbey silicone gun oil dropper bottle\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/aeg-mid-and-low-cap-magazines\"\u003eAEG mid and low cap magazines\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Action Army","offers":[{"title":"290mm","offer_id":59224146280783,"sku":"10828800000","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"310mm","offer_id":59224254579023,"sku":"10828900000","price":26.0,"currency_code":"GBP","in_stock":true},{"title":"370mm","offer_id":59224146313551,"sku":"10611100000","price":27.99,"currency_code":"GBP","in_stock":true},{"title":"470mm","offer_id":59224146346319,"sku":"9010109217040","price":27.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/files\/ActionArmy6.03mmAEGinnerbarrel_VariousSizes.jpg?v=1792679979"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5349\/1023\/collections\/aeg-barrels.jpg?v=1792490367","url":"https:\/\/www.socomtactical.net\/collections\/airsoft-aeg-inner-barrels.oembed","provider":"Socom Tactical Airsoft","version":"1.0","type":"link"}