HPA Conversion Kit F2™ V3 for AK - PolarStar

Product: HPA Conversion Kit F2™ V3 for AK - PolarStar Product description: The F2™ model features a dual solenoid design that won the "Best HPA Drive" award at the 9th Airsoft Players Choice Awards. This system offers the same functionality as the Fusion Engine™, but in a more compact and efficient design. The dual solenoids allow for independent adjustment of the nozzle and shut-off valve, providing precise control over the filling time and volume of air used. This makes it possible to change the firing sequence and operate the system in both close bolt and "AEG" modes. The F2™ features a new one-piece poppet valve that works on the same principle as the Fusion Engine™, but with optimized air efficiency. The valve is capable of operating at lower pressures and with less air volume. The design allows for operating pressures ranging from 45 psi to 145 psi, enabling muzzle velocities from CQB to DMR with a single nozzle. The pre-tensioned nozzle ensures consistent load force regardless of operating pressure. The system shares a spring with the Fusion Engine™, with a choice between a light and heavy spring to adjust the loading force. Muzzle velocity reaches up to 480 fps when using 0.20g BBs and 145 psi pressure. The velocity can be easily adjusted by changing the input pressure, without the need to replace nozzles. For example, with a standard AK-47, the velocity can be adjusted from 280 fps to approximately 480 fps with 0.20g BBs. The velocity may vary depending on the barrel length. The maximum rate of fire of the F2 system is 30 rounds per second, which is affected by the operating pressure and the quality of the magazine and BBs. Most standard configurations allow this rate of fire to be achieved. Air utilization is more than 1,000 shots from a 13/3000 bottle at 1.5 J with a weight of 0.28 g. Thanks to its design that minimizes empty air volume, the system offers better range, faster response, and lower air consumption per shot. Tested with a barrel diameter of 6.05 mm and a length of 375 mm.