Polarstar Kythera HPA Engine Size:V3 Gearbox two simple dials on the

two simple dials on the fire control unit located in your stock

1v Lipo/Li-Ion battery required)

No warranty on this product

Comes in black and FDE (Tan) colors

Gold color

Polarstar Kythera HPA Engine Size:V3 Gearbox two simple dials on theThe 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