Description
Laylax First Factory Gas Route Seal Gasket for Tokyo Marui M4A1 MWS GBB Magazines
This Laylax First Factory gas route seal gasket is a replacement and upgrade part for Tokyo Marui M4A1 MWS gas blowback rifle magazines. It sits at the top of the magazine, where gas passes from the magazine into the rifle’s nozzle, and its job is to make a tight seal so none of that gas is wasted.
A worn or hardened gas route seal is a common cause of gas leaks, poor blowback and inconsistent shots, so fitting a fresh, better-quality seal is a simple way to keep MWS magazines working well.
Design
A retailer listing describes a tough, durable rubber composite seal that improves the gas seal between the magazine and nozzle. It also describes a smooth, curved gas flow path that reduces flow resistance, with a smoother surface than the original seal.
It is listed as a drop-in part that needs some DIY knowledge to fit.
Signs you need one
Look for gas hissing from the top of the magazine when you fire, weak or sluggish blowback, or a seal that is cracked, flattened or hard to the touch. Replacing seals across all your magazines at the same time keeps their performance even.
Key features
- Gas route seal for TM MWS magazines
- Improves the seal between magazine and nozzle (per retailer listing)
- Smooth, curved gas path to reduce flow resistance (per retailer listing)
- Durable rubber composite
- Drop-in fit, DIY knowledge needed
- First Factory upgrade part by Laylax
Compatibility
Listed for Tokyo Marui MWS GBB rifle magazines and TM-spec MWS magazines. Other makers’ MWS-compatible magazines may use different seals, so compare with your existing part, and contact us if you are unsure.
Care and maintenance
Gas blowback parts are made to close tolerances. If you are not confident stripping your replica or magazine, have the part fitted by an airsoft technician. Work on a clean surface and take photos as you go so reassembly is straightforward.
Lubricate rubber seals only with silicone oil; petroleum-based oils and solvents make rubber swell and break down. Store magazines with a small amount of gas in them to keep the seals supple, and keep the replica somewhere cool and dry.
Who is it for?
This seal is for Tokyo Marui MWS owners who want to cure a leaking magazine or improve gas efficiency, and for players who like to keep spare seals in the kit bag.
