Polarstar Fusion Engine Gen.3 Drop in Kit - V2 M4
HI-Capa Hub
£535
We have not confirmed this price since it was first recorded. Check before buying.
This is a complete drop-in system which replaces the entire AEG gearbox with a full CNC machined lightweight aluminum chassis. It is the most adjustable system we produce with the widest range of adjustment in both velocity and rate of fire. Being a dual solenoid, closed bolt system so you are able to adjust the poppet valve (firing air) and nozzle (feeding) independently for full control over both the loading time and air volume used. 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. Indep
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Buy from HI-CAPA HUB LTDOut of stock. Price seen 2026-09-26. Not an affiliate link, we earn nothing from it.






