PolarStar F2 HPA Engine for V2 Gearbox Airsoft Rifles HPA FIRING MODES: SINGLE SHOT

FIRING MODES: SINGLE SHOT

They also automatically stop charging at a full charge

DURABLE METAL TRIGGER AND CONTROLS

At the sign of any damage do not use

PolarStar F2 HPA Engine for V2 Gearbox Airsoft Rifles HPA FIRING MODES: SINGLE SHOTWhat is F2? F2 is essentially a Mini Fusion Engine. It offers the same adjustability and performance as the Fusion Engine in a cylinder sized package. Patented Dual Solenoid Design 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 solenoids allow for the nozzle and the poppet valve to be adjusted independently of each other for unparalleled