Jaeger Precision

Jaeger Precision is a UK maker of practical upgrades for gas blowback rifles, best known for its NPAS power-adjustment valves and Easi-Loader magazine adapters. Many of its parts are made in the Midlands, and each one is designed to fix a real problem players run into.

Our Jaeger Precision range covers the Tokyo Marui MWS, TM AKM/AKX, TM MP7 and VFC GBBRs, with NPAS valves, hop nubs, ZET plates, recoil weights, Easi-Loaders and propane adapters. For breakdowns and fitting guides, see Jaeger Precision on YouTube.

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Jaeger Precision GBBR Upgrades

Jaeger Precision designs upgrade parts for gas blowback rifles, with the biggest range for the Tokyo Marui MWS. Most parts are made for a specific rifle, so always check the product title matches your make and model before you order.

NPAS Valves and Power-Down Valves

An NPAS (negative pressure adjustment system) valve lets you set your rifle's power to meet your site's limits. Jaeger Precision NPAS valves are made from high-strength nylon with hardened steel grub screws, and they all adjust with a standard 1.5mm Allen key:

• TM MWS NPAS – adjusts through the nozzle and fits Tokyo Marui and Guns Modify nozzles, plus Double Eagle and Salvo Precision nozzles (some Double Eagle nozzles may be a tight fit).
• NPAS Nozzle Valve for VFC GBBRs – for VFC/Umarex rifles including the HK416, HK417, M4, SR25, SCAR, MP7, G36 and M249, plus the APFG MPX and MCX and Maruyama SCW-9.
• NPAS for Tokyo Marui AKM & AKX – adjusts on the rifle without stripping the bolt carrier.
• Tokyo Marui MP7 NPAS – an adjustable valve for the TM MP7. Professional fitting is recommended.

For the TM AKM and AKX, the CNC power-down valve is a simpler fixed option, machined from POM in Low and Very Low versions. Always chronograph your rifle after fitting or adjusting a valve.

Tokyo Marui MWS Upgrades

• Hop-up: the Titan Nub and CNC 7075 aluminium Titan Nub use guide fins to keep the nub straight as the hop arm pushes down, so you get the full contact patch.
• Recoil and cycling: the blowback weight in 316 stainless steel (about 82g) or titanium (about 46g), the titanium ZET plate, the stronger Easi-Nozzle spring, and the Puck set of four short-stroke/buffer spacers.
• Hardware: marine-grade stainless steel trigger box screw and bolt carrier screws with T10 Torx heads and thread-lock patches, and a stainless steel barrel nut for the TM MK18 (NGRS and GBBR) and MTR16.

AK, VFC and Other Platforms

For the Tokyo Marui AKM and AKX, the Alpha Arm 2.0 is a one-piece 7075 aluminium hop arm that needs no nub and has been tested with BBs from 0.25g to 0.48g. VFC M249 owners can add the brass heavy recoil rod kit for more felt recoil. There's also a TPU MCX recoil buffer pad (Toxicant MCX, Salvo Precision MCX and Toxicant XM5 versions), a 316 stainless steel heavy buffer for the Double Eagle Ghetto Blaster, and a DT hop nub for the Silverback MDR-X in high and low sizes.

Easi-Loader Magazine Adapters

Filling GBBR magazines with the stock loader is slow. Easi-Loaders fit onto a standard speed loader and sit snugly on the magazine, so you can fill it like a mid-cap. Versions are available for the TM MWS, TM AKM/AKX, VFC M4 (Stanag and Pmag), VFC M249 and Guns Modify MWS Pmags. Take care not to overfill – removing the top BB once a magazine is full protects your loading arm and nozzle.

Propane Adapters and Shims

For players who run propane in rifles rated for it, the CNC propane adapter V2 is machined from 7075 aluminium, and the Lite version has a lower-cost polymer body. Only use propane in a gun that can handle the pressure, and never near a flame. To line up suppressors and flash hiders, the clocking shims come as a set of ten (five 0.1mm and five 0.2mm).

Also in this collection: the TerrainTac Bumpy McGripFace slanted M-LOK grip, supplied with M-LOK mounting hardware.

Find more in our gas blowback rifle parts, Tokyo Marui MWS parts and magazine speedloaders, or pair the Alpha Arm with a Sniper Mechanics Flamingo bucking.