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

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 Tokyo 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.