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Angel Custom NPAS Rocket Valve for WE Open Bolt Airsoft GBB Rifles

ID: 45393 (AC-VA-04)
Angel Custom859188453937AC-VA-0445393
4.3 stars, based on 3 reviews
Angel Custom NPAS Rocket Valve for WE Open Bolt Airsoft GBB Rifles
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Angel Custom

$20.00 $10.00

The Angel Custom NPAS Rocket valve is the perfect addition for anyone looking to regulate the fps on their gas blowback airsoft rifle / pistol.
By restricting the air flow to the nozzle, users may lower the fps on their gun to meet certain field fps limits.


  • CNC Aluminum Construction
  • Stainless Steel shaft
  • Fully Adjustable
  • Custom Valve Spring
  • Adjustment Tool included
  • Included extra Enhanced Valve Spring for more precise adjustment
Compatibility: For WE-Tech Open Bolt Airsoft GBB Rifles and Tokyo Marui GBB Pistols
Material: Aluminum, Stainless Steel

Manufacturer: Angel Custom

NPAS kits are meant to maintain fps limits by restricting air flow; they are not meant to be used to increase the power / fps of your airsoft gun.
Lowering the fps too far may cause cycling issues. If this happens, turn the valve back up slowly until the gun begins cycling correctly again.

About Angel Custom

Angel Custom was founded on a mission to promote satisfaction and excitement on the Airsoft battlefield. Founded by Airsofters searching for perfections, it is our joy and pride to present you our battle tested creations. We strive to provide quality products and services that are reliable and trustworthy to be worthy of the trust placed in us.

3 Customer Reviews

(Write a review)

by Dan G. on 06/09/2019
"Nothing wrong with the wrench that came with mine. I bought this to see if it would work in the Well G74B GBBR, it does not. Outer diameter is slightly too small. Beautiful little part regardless.
by James G. on 07/17/2019
"so far so good. I installed this npas in my we scar MK17. Weapon functions perfectly, actually noticed a little FPS increase. Adjustment is good, it doesn't change upon firing good stiff fit in the unit so that the adjustment you make doesnt change.
The only reason I cant give this a 5 star rating is because I had to modify the wrench that came from it and that it uses a square socket wrench instead of a set screw hex key style adjuster.
The socket end of the wrench was on the the wrong end. Easy enough to solve by rebending the wrench so that the socket is on the end to reach inside the unit.
by Brian C. on 02/17/2014
"The npas itself is simple and works just fine, the wrench on the other hand is a complete joke. Apperently angel custom didnt think to measure the distance the valvesat inside the nozzle as the wrench simply cannot reach the valve to adjust it. Heat the wrenchcand carefully bend it straight then heat and bend the other end to put the hole on the long end or its just a fancy rocket valve.

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