UAC Hi-capa Hammer Power Tuner Kit custom made -7mm Bearing Gearbox

-7mm Bearing Gearbox

it will increase the the power by another 50 FPS or more depending on the AEG or GBBR you use

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UAC Hi-capa Hammer Power Tuner Kit custom made -7mm Bearing GearboxWhile using this kit, it allow to adjust the power of the hammer spring in wide range. Suitable for competition shooter to wargame player. Also applicable and allow fine tune the power for different temperature condition. Work great and allow more custom tuning with UAC High Flow Valve For Hi capa and Airseal Rubber. 1 soft & 1 hard spring suitable for different condition. 10 spacer for fine tuning.