Product Description. Essential part for upgrading your Airsoft AEG To build a tight & durable gearboxDesign for high-speed operation & heavy load Prevent cling by burningDesign for any 9mm Gearbox VersionSuitable for ALL AEG brand: Tokyo Marui, ARES, STAR, G&P, King Arms… As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed
