WE M4 GBBR Magazine Gas Output Valve

Code: 11725
  • Replacement original part
  • For WE M4 GBBR magazine
  • Fix up your old mags!

If you have some old WE M4 GBBR magazines this may be the part you need to freshen them up! This part is an original WE part, and replaces the knocker valve on the WE M4 GBBR magazine. The valve body is constructed from brass, with steel internal parts and rubber O rings.

Full description


Package Includes

  • WE M4 GBBR Magazine Gas Output Valve



Internal Part Type
Valve, Magazine Spares,
Patrol Base - Warning Icon
This valve is for the WE series of M4 GBBR magazines, it is not compatible with any other magazine type


Colour Wheel Greyscale
Item Colour
Construction Icon
Brass valve with steel parts and rubber O rings
Internal Part Construction
Steel, Rubber, Brass,

Part Specific

Part for Power Source Type
Weapon Platform
  • AR Platform
  • M4 / AR15 / M16
  • Long Gun
  • Assault Rifle
  • WE M4 GBBR
Package Includes
Replacement standard Knocker Valve

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.

Need ideas for something extra?