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RA-Tech Negative Pressure Air System NPAS for Tokyo Marui / WE Gas Blowback Pistols and WE Open Bolt Rifles

ID: 34200 (RAG-WE-026)
RA-Tech/Maple Leaf (AST)34200
Evike.com
4.9 stars, based on 7 reviews
RA-Tech Negative Pressure Air System NPAS for Tokyo Marui / WE Gas Blowback Pistols and WE Open Bolt Rifles
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$20.00



With the NPAS kit, it will be much easier to lower / raise FPS on your gas gun.

Features :
- Full Metal Construction
- Adjustable Muzzle Velocity / FPS
- Durable Rubber O-rings Installed
- For Marui / WE Tech GBB Pistols and WE Tech Open Bolt GBB Rifles


Note: Modification required. Please use discretion when installing custom parts as compatibility and fit may vary.

7 Customer Reviews

(Write a review)

by Brian W. on 04/30/2017
"Installed this in the WE M4A1 Open Bolt. It's great. Wasn't a hard install. (Thanks to a YouTube video by a guy in Britain. It has no included instructions.) Took about 20 minutes to a half hour to install, with just a couple of standard tools. Was able to adjust FPS down to the high 200s with .25s so it was legal at my local indoor venue. It also stabilized the FPS, bringing it to a variance of 15 FPS between shots from the previous 40 FPS variance.
by John C. on 08/28/2016
"Works wonderfully on the WE AK-74UN(AKS-74U). You can adjust your FPS to coincide with your field limits.

You must modify the rear half of your nozzle in order for this to work correctly. Basically it involves shortening the nozzle by a bit, this is easily done with a dremel or another rotary tool.
by Ramon M. on 11/16/2015
"Indeed it does what its suppose to do. Using .25 bbs I manage to lower the fps for my we g39 from 420+ to maybe around 360 or below with proper adjustment and holds quite well too. Now I can use mine in airsoft field games without over-exceeding their limitations.

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