Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit dump pouch M-LOK rail adapters included in

M-LOK rail adapters included in every box

realistic blowback functionality

FPS is around 330 w/

The 5KU Tracer/Muzzle Unit for Shotgun (24mm Diameter)is meant for any Airsoft shotgun with a 24mm diameter barrel

Easy to mount and use

Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit dump pouch M-LOK rail adapters included inPolarstar Fusion Engine V2 Gen3 HPA Standard FCU Conversion Kit. This is the full sized FCU version for easy programming. Contains everything you need internally. Works drop in with most M4 platforms. G&G, Elite Force, JG, and most are pretty easy to install. Watch some Youtube videos on how to put it in yourself. With the Polarstar Fusion Engine V2 Gen3 HPA Standard FCU Conversion Kit, all you need to complete your HPA setup is: HPA Air Tank (non SLP