Polarstar Kythera HPA Engine Size:V2 Gearbox It's only for stock Marui

It's only for stock Marui made cylinders

Traditional M92 sights

KWA HK MP7 40-Round Gas Magazine

6v 1600 MAh Long Stick Battery is a unique battery that fits in some specific guns

Polarstar Kythera HPA Engine Size:V2 Gearbox It's only for stock MaruiThe 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