Polarstar Kythera HPA Engine Size:V3 Gearbox Comes in black and FDE

Comes in black and FDE (Tan) colors

No warranty on this product

Gold color

Due to its true closed bolt design and air balanced nozzle return

Polarstar Kythera HPA Engine Size:V3 Gearbox Comes in black and FDEThe Polarstar Kythera HPA Engine for airsoft AEGs. Fits in various mechbox styles including V2 (M4, etc), V3, and JG SR 25 style. Achieve 270 500 FPS with simple adjustments. In addition to the engine, you will need a base gun, HPA air tank, line, and regulator. The Kythera has been the most eagerly anticipated products from PolarStar in the past decade. This HPA system is a radical departure from all previous systems that PolarStar has produced since