Fusion Engine HPA Drop-In Kit M249 out-of-stock the replica gains a higher

the replica gains a higher rate of fire

Weight: 240 g Shipping weight: 310 g

Weight: 280 g Shipping weight: 390 g

It makes them a prime choice for military

Fusion Engine HPA Drop-In Kit M249 out-of-stock the replica gains a higherDescription 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