Polarstar F2 HPA Engine V2

Winner of the “Best HPA Engine” in the 9th Airsoft Players Choice Awards, the dual solenoid design of the F2™ provides the same functionality as the legendary Fusion Engine™ but in a more compact, efficient, and flexible design.  Use it as a drop-in to your existing gearboxes for easy and fast performance! This Polarstar F2 HPA Engine V2 Includes: Polarstar F2 HPA Engine V2: Dual solenoid design allows for open and closed bolt firing F2 FCU with LCD allows for easy tuning Spring-loaded nozzle provides consistent loading force Lightweight one-piece poppet valve can operate at lower pressures Compatible with: Any standard V2 gearbox AirTac Customs CBRN Upper with CRBN Gearbox