Polarstar Kythera HPA Engine Size:V2 Gearbox Comes in black or light

Comes in black or light grey color

It's only for stock Marui made cylinders

Traditional M92 sights

Fire Modes: Semi/Full-Auto

Polarstar Kythera HPA Engine Size:V2 Gearbox Comes in black or lightThe 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