Fusion Engine HPA Drop-In Kit M249 out-of-stock It makes them a prime

It makes them a prime choice for military

roots in motorsports have grown into industries where skilled hands of mechanics

Two DOUBLEBACK buckles grant quick and intuitive adjustment of leg loops

and high degree of comfort

Weight: 240 g Shipping weight: 310 g

Fusion Engine HPA Drop-In Kit M249 out-of-stock It makes them a primeDescription The Fusion Engine from Polarstar is today one of the most proven HPA design for airsoft. It was originally released in 2011 and its received reward for Best HPA Engine in 8th Airsoft Players Choice Awards by Popular Airsoft. The third generation of this system continues this tradition and provides the user with one of the best drop in kits on the market. This complete drop in system replaces the whole AEG gearbox with high quality, CNC