Fusion Engine HPA Drop-In Kit V2 Gen 3 M4 / M16 in-stock Weight: 90 g Shipping weight:

Weight: 90 g Shipping weight: 120 g

refining and perfecting every detail to provide products that won’t let you down

Weight: 23 g Shipping weight: 39 g

Material: Aluminum Pieces: 1 Rail Type: Picatinny / Weaver Profile Level: High Ring Diameter: 30mm (25

Fusion Engine HPA Drop-In Kit V2 Gen 3 M4 / M16 in-stock Weight: 90 g Shipping weight:Description 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