Looking for a reliable and high performance reinforced full metal gearbox for your M4 AEG? This SHS Full Metal Version 2 Gearbox is reinforced and easily drops in to most M4 airsoft AEGs. With its included M120 spring, this complete gearbox delivers powerful performance right out of the box and allows your AEG to shoot up to 400 FPS (w/ 0.20g BBs). Whether you are looking for a reliable replacement gearbox, or you want a drop-in gearbox that will allow your rifle to perform much better than when using stock parts, this SHS Version 2 gearbox has you covered!
SHS drop-in V2 gearbox
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