Element airsoft AEG steel gear set with piston. Replace Marui's original gears with this upgrade steel power gear. Package with 200% Torque Gear set plus full-teeth piston. Full teeth piston is made of reinforced plastic and the first teeth are made of metal. Gear set is the substantial high-cost performance gear set. Torque up gear is designed to increase torque for pushing higher spring tension in power upgrade AEG. Suitable for Element, Systema, Laylax & Tokyo Marui Airsoft AEG piston series. Best compatible with Element spring M125ST & M135ST. As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed.
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