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Rifle (509mm) = 590fps
a recommended nozzle length may be calculated by measuring your original gearbox and nozzle
The valve design of the Kythera operates without the need for air to control the opening or closing of the valve
• Retail fit
This starts at the Green nozzle which has the most restrictive bore with the least amount of flow
Fusion Engine™ Drop-In Kit MODEL:V2 GEN3 (M4/M16) Rifle (509mm) = 590fpsThe 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'
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