F2™ HPA Conversion Kit M4 High Power Airsoft It is sure to add

It is sure to add flare and match nearly any build

These 6mm precision BBs give you greater accuracy and consistency

HK M27 IAR M4 AEG made by VFC is a fully licensed Heckler & Koch airsoft fun made by the team at Umarex USA

The HK 45 GBB gas airsoft gun has a velocity 325 FPS with a moving hammer

F2™ HPA Conversion Kit M4 High Power Airsoft It is sure to addWinner 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. Dual solenoids allow for the nozzle and the poppet valve to be adjusted independently of each other for unparalleled control over both the loading time and air volume used. Additionally, this makes it possible to change the