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

ID: 45393 (AC-VA-04)
Angel Custom45393
2.8 stars, based on 4 reviews
Angel Custom NPAS Rocket Valve for WE Open Bolt Airsoft GBB Rifles
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$20.00 $17.00

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.

California residents click here for Proposition 65 warning

4 Customer Reviews

(Write a review)

by Edgar B. on 12/03/2016
"I wish I read the reviews before I bought this. It works well enough, the tool is frustrating because it's not meant to be used while the npas is in the bolt. After some straightening it's working now. Spend the extra few bucks and go for RA Tech.
by Colin G. on 08/02/2015
"The other 2 reviews basically nailed it.
The wrench is just plain ridiculous. I heated and bent the wrench as mentioned in another review and it reaches now but just having to do that is excuse-less.

Having my npas closed I was shooting 390 fps with a .25
When I went to adjust it for my cqb field it would NOT open. Pretty sure I just got a lemon but regardless it's my experience with it. Also it's not wanting to stay open even when I opened it enough to shoot 360 fps it kept closing.

I would not, not! Recommend this. Get the RA-TECH npas for a few more bucks. It's out of stock which is why I bought this one but I would've gladly spent 10$ more on shipping from a different site for the RA-TECH one.

Giving a 2 star rating only cause it does lower fps. Just installing it, my WE 416 shot 385-398 fps with GREEN GAS & .25. Propane will put you over for the 400 fps field limits.
by Joshua A. on 02/27/2014
"this npas is more of a 3.5 than a 3 but here's my thoughts on it. Its ok in terms of quality, the ra tech is much better especially in the way the disk valve sits as the angle custom one like to be crooked and doesn't hold well in the threads and can easily be adjusted. spend the extra money on the ra tech one if its in stock. If its out of stock you can still buy this one as it does work. the allen key is horrible as the adjustment hole is on the wrong side of the key so you can adjust the npas without taking apart the nozzle completely.

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