Polarstar Fusion Engine (Blue Nozzle) Surefire Contoured padded shoulder straps with

Contoured padded shoulder straps with sternum straps

Provide stable and smooth blowback cycling

This GLOCK 17 Gen4 has a fully adjustable airsoft ho-pup system and fits most if not all standard GLOCK 17 holsters

△ Multi-color flame (Bifrost) effect

made with enhanced stainless steel (SUS) material

Polarstar Fusion Engine (Blue Nozzle) Surefire Contoured padded shoulder straps withThe 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' Choice Awards. This is