13:1 CNC gearset for V2 & V3 gearbox

CNC machining, enhanced gear to be more durable Replace Marui's Original Gears with this upgrade high Speed Gear 100% steel Lightweight design to maximise performance Lower electricity consumption & lower noise Recommanded spring power : M110 or less, (350 FPS max) Suitable for Airsoft AEG models with Version 2 & 3 Gearbox.