The WE M4 is one of the most widespread gas blowback rifles (GBBR) in airsoft, and here you will find spare and upgrade parts for it. The range covers the parts that wear or break under hard use: firing pin, nozzle, valve lock, O-rings and small original parts.
Genuine WE parts with spare part numbers let you replace exactly the part you are missing. RA-Tech supplies the upgrades: firing pin and firing pin base, firing pin with valve lock, aluminium nozzle housing, nozzle tip and mag lever.
What to look for
Part number: Use WE's exploded diagram and find the number of the part you need – then you can be sure of the fit.
Nozzle: The nozzle is a wear part in a GBBR. An aluminium housing withstands more than plastic, especially in cold weather and at high gas pressure.
Firing pin and valve: A stronger firing pin and valve lock give more reliable gas release from the magazine.
Who it suits
For those who play with a WE M4 and want to keep it running or upgrade the wear parts. See also Gas Spare & Upgrade Parts, or get help from our workshop.
Choose your airsoft gun, air rifle, air pistol or launcher, and we’ll show you which parts, ammo, sights and accessories fit it – across the whole shop.
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My Gun is in beta and under continuous development. It is built by our technicians with help from AI and can make mistakes – if in doubt, ask us before you buy. Read the disclaimer – and help us make it better.
