Replace Marui's original gears with this upgrade high speed gear. Suitable for airsoft electric gun with version 2 & 3 gearbox. High speed type would increase rate of fire, best use with higher voltage battery, make them suitable for high torque spring. Drive ratio: 16:1. Suitable spring: M110-M150. Recommend battery voltage: 12V or above. Full Metal gears. Speed-up type. Weight(Gram):86 (With Box)
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