This is a complete HPA drop-in that replaces an AEG gearbox. It is the most adjustable system Polarstar makes with the widest range of adjustment in both velocity and rate of fire. The Fusion Engine has a fully adjustable FCU which allows you to adjust the poppet valve (firing air) and nozzle (feeding) independently for full control over both the loading time and air volume used.
This PolarStar Airsoft V2 Gen3 Fusion Engine Includes:
PolarStar Airsoft V2 Gen3 Fusion Engine:
- User-selectable Semi/Full Auto, Semi Auto Only, and Variable Burst modes.
- Open Bolt and Closed Bolt firing modes.
- Independently adjustable velocity and cyclic rate.
- Instant trigger response. Faster than an AEG with a Li-po battery
- Any V2 lower receiver system
- AirTac CRBN Uppers, with drop-in fitment