Muzzle Velocity: 300-330 FPS (w/

Compatible with KWA USP magazines

Powered by connecting the 2 Round Terminals to the Motor Screw Terminals RED (+) and BLACK (-)

The Beanie can also be un-cuffed/rolled down for those who like a little extra length

PolarStar Fusion Engine Nozzle G36 (Blue) hk45 Muzzle Velocity: 300-330 FPS (w/The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. The Fusion Engine has an approximate 60 100fps window of adjustment depending on the barrel length being used. This is accomplished by adjusting your regulator output pressure within the 80 120psi operating range of the engine. Changing the nozzle allows you to shift the velocity range of your rifle up or down