PolarStar Fusion Engine™ HPA Drop-In Conversion Kit M4A1 Maple leaf bucking

Maple leaf bucking

Umarex Elite Force H&K MP5K AEG | Black

Engineered to be the lightest carbon fiber wrapped bottles ever released by HK Army

Dual HPA air line routes integrated into shoulder straps secure hose in place to prevent kinks

Elite Features & Benefits

PolarStar Fusion Engine™ HPA Drop-In Conversion Kit M4A1 Maple leaf buckingThe Fusion Engine was released in 2011 as the first new HPA system to hit the airsoft market in over two decades the system that started the HPA revolution and set the benchmark all others are measured against. Winner of "Best HPA Engine" the very first year Popular Airsoft added the HPA class to their Players' Choice Awards. This complete drop in system replaces the entire AEG gearbox with a full CNC machined lightweight aluminum chassis. As a dual