Action Army U01-004 Outlet Valve for AAP-01

Action Army
Code: PU0202
Was £13.99
Save £2.10
  • For AAP-01
  • Ideal Spare
  • Fix Gas Mags

A replacement or spare Outlet / Knocker Valve for the Action Army AAP-01 Assassin Pistol. If you own plenty of Magazines and want to keep them in tip-top condition, then you're going to want a few Knocker Valves spare in your arsenal. They are incredibly easy to install, provided you have an appropriate Valve Key on standby. You can use other tools to install them, but this is not recommended as you could damage the Valve.

Full description



  • For the AAP-01 Pistol
  • Knocker / Outlet Valve
  • Vital Spare Component
  • For Gas Magazines
  • Fix Leaking Magazines
  • Brass / Alloy Construction
  • Must-Have Spare Part

Package Includes

  • Action Army Outlet Valve for AAP-01



Parts & Accessories Type
Internal Parts
Internal Part Type

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.01kg


Colour Wheel Greyscale
Item Colour
Black, Silver, Brass,
Construction Icon
Brass / Alloy / Silicon
Internal Part Construction
Alloy, Silicon, Brass,

Part Specific

Part for Power Source Type
Weapon Platform

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.