The Polarstar F1 Engine for the AK-47 series of airsoft guns is here. HPA tap your Version 3 gearbox with this new F1 airsoft air engine system. Includes custom setup for V3 and AK AEGs for drop-in setup.The
F1 is a high performance, universal HPA (High Pressure Air) drop-in cylinder designed to fit virtually any AEG gearbox. It is available as both a Centerline version, which will work with most common gearbox types, but it is also available in an Offset version to work with those unique gearboxes such the V6 and V7. It replaces the original gearbox components with a programmable pneumatic system allowing for higher performance, greater reliability and complete adjustability. This allows the F1 to fill any role ranging from CQB to sniper with no additional components needed.