PolarStar Fusion Engine™ HPA Drop-In Conversion Kit M4A1 Elite Features & Benefits

Elite Features & Benefits

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

metal keymod handguard and a selector switch with a heavy duty detent that gives the user tactile feedback when changing fire modes

Includes 11

This Polymer Angled Foregrip is a slim line three-piece design with an interchangeable finger shelf that allows for a flat "A1-style" surface or an "A2-style" finger nub

PolarStar Fusion Engine™ HPA Drop-In Conversion Kit M4A1 Elite Features & BenefitsThe 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