Fusion Engine™ Drop-In Kit MODEL:M249 (CA/A&K) (Modification of the gearbox is

(Modification of the gearbox is required)

These can be purchased in the Nozzles section

For Version 2 (V2) Fusion Engine only

~250 w/ 33g @ 1

Being a true closed bolt system it is easier to achieve a high level of accuracy since it is not as critical of the hop-up configuration as an open bolt system

Fusion Engine™ Drop-In Kit MODEL:M249 (CA/A&K) (Modification of the gearbox isThe Original HPA Rebel The Fusion Engine was released in 2011 and was the first new HPA system to hit the airsoft market in over two decades. This is the system that started the HPA revolution and has set the benchmark to which all other systems are measured. Although many have followed it, the Fusion Engine is considered by most to be the best. This system won "Best HPA Engine" the very first year Popular Airsoft added the HPA class to their Players'