F2™ HPA Conversion Kit M4 Stryker The G17 Gen4 comes in

The G17 Gen4 comes in airsoft field safe at 290 FPS with a

The 22 BB drop-free magazine also holds a single 12g CO2 cartridge

Just load up the EF Speedloader with a full charge of 470 BBs and plunge the lever a few times until your magazine if full

20 gram BB

and do not try to over load them

F2™ HPA Conversion Kit M4 Stryker The G17 Gen4 comes inWinner 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