GBBR magazines work hard. They hold the gas that fires every shot and cycles the bolt, so worn O-rings, tired springs or damaged feed lips quickly lead to leaks, misfeeds and lost power.
Our airsoft GBBR magazine parts include O-rings, feed lips, springs, gas routers and fill valves, especially for Tokyo Marui MWS magazines, from Modify, Unicorn and Federal Concepts.
Maple Leaf
Maple Leaf Snug-shut GBB magazine Routers (Various models)
Regular price £6.50Unit price
Unicorn
Unicorn Airsoft O-Ring for gas magazines inlet / fill valve 5 pack
Regular price £3.50Unit price
Guns Modify
GUNS MODIFY EVO Stainless Magazine Out Put Valve for Marui MWS/Hi-Capa GBB Series
Regular price £15.00Unit price
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Guns Modify
GUNS MODIFY EVO Stainless Steel Output Valve for TM & GM MWS GBB / Hi-Capa Magazine ( 3pcs )
Regular price £34.99Unit price -
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Sold outGuns Modify
GUNS MODIFY EVO Modified High Tenacity Magazine Lip for Marui MWS GBB Airsoft ( 3pcs )
Regular price £21.99Unit price
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Frequently Asked Questions
Need To know more?
Why is my GBBR magazine leaking?
Why is my GBBR magazine leaking?
Will these parts fit my magazine?
Will these parts fit my magazine?
Which fill valve do I need?
Which fill valve do I need?
How should I store GBBR magazines?
How should I store GBBR magazines?
Tokyo Marui MWS Magazine Parts
The MWS is one of the most popular GBBR platforms, and Modify-Tech makes a wide range of magazine upgrades for it. These include the MWS main O-ring (10-pack), enhanced feed lips, enhanced magazine lip, 35-round magazine spring, enhanced gas router and reinforced service parts.
Fill Valves
A leaking fill valve wastes gas. The Unicorn air-return valves, in M5 and M4.5 sizes, are a popular replacement. Check your valve size before ordering, and always empty the magazine first.
Base Plates
Change the look of your MWS magazines with the Federal Concepts M3 base plate.
Looking After GBBR Magazines
Store magazines with a little gas in to keep seals supple, and add a drop of silicone oil to the fill valve and seals regularly. Avoid overfilling, and let magazines warm up between fills on cold days.
More GBBR Parts
Need a spare magazine? See our Tokyo Marui MWS magazines and gas rifle magazines. For the rifle itself, see MWS parts and GBBR nozzles.
