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and SMG magazine adapter that fits inside the M4 magazine well
Full metal construction to look like a suppressor unit
AW Customs
A great trainer if you have the real thing
Polarstar Kythera HPA Engine Size:SR-25 Gearbox and SMG magazine adapter thatThe 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
