PolarStar Fusion Engine - V2/M4

The Fusion Engine™ was released in 2011 and was the first new HPA system to hit the airsoft market in over two decades. This is the system that started the HPA revolution and has set the benchmark to which all other systems are measured. Although many have followed it, the Fusion Engine™ is considered by most to be the best. This system won "Best HPA Engine" the very first year Popular Airsoft added the HPA class to their Players' Choice Awards.
This is a complete drop-in system which replaces the entire AEG gearbox with a full CNC machined lightweight aluminium 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.
**All kits come with an FCU, Switchboard, Wire Harness and any additional components needed to convert the specific airsoft rifle model for which the kit is configured. The HPA Tank, Air Rig (regulator/line/QD fitting) and Battery needed to operate the system are purchased separately.

***If you do not purchase a custom braided grip line, you will need to purchase a Balystik male nipple for macroline to enable you to connect to your main line. You can purchase the fitting here: BalystiK male nipple for macroline (US Version) (highpressureairsoft.co.uk)