Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit hpa With precocking enabled

With precocking enabled

Full blowback action unlike the other less expensive HK USP Co2 model

and secure way of carrying a Shotgun over the shoulder or modular mounting onto MOLLE compatible gear

Fully Upgradeable

4v 3000mAh Stick Li-Ion Battery

Polarstar Fusion Engine V2 Gen3 - HPA Standard FCU Conversion Kit hpa With precocking enabledPolarstar 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