1 Echo1 LiPo #2:18BB Caliber:6mmBearing Size:8mm Steel BearingBody type:High Strength PolymerGearbox Reinforced:YesGearbox Type:8mm Version 3Motor Type:Mid-Torque Short MotorSights included:Outer Barrel Construction:One piece metalMetal Specifics:Barrel assembly

cleaner gas in a superior-engineered cylinder can influence the lifetime and performance of any airgun

VERSION 2 METAL GEARBOX W/ 8MM BUSHINGS

Various accessory partsIt comes with two types of M-LOK covers

Suitable for AAIPSC Standard division

PolarStar Fusion Engine for M249 Gearbox Series gel strike 1 Echo1 LiPo #2:18BB Caliber:6mmBearingThe 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'