The PolarStar F2 is the best HPA engine on the market! This unit comes with everything you need, from the wire harness, to the triggerboard, to the FCU. 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.
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