Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit EMG Will fit nearly all airsoft

Will fit nearly all airsoft guns - 14mm CCW threaded only

Beretta 92FS

the precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) to perform best with R-Hop and Standard-Hop to keep the BB shooting accurately and consistently on every single shot

Black design

Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit EMG Will fit nearly all airsoftPolarstar 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