AIP 120% Enhanced Recoil/Hammer Spring For Hi-capa 5.1/4.3

- Best use in Conjunction with Metal Slide/Outer Barrel + High Flow Blowoff Valve
- Recoil Spring produces stronger & faster blowback feel
- Hammer Spring increase the hammer tension resulting higher gas output, i.e. more power fps
- Suitable for Marui Hi-Capa 5.1 / 4.3 Series Airsoft Gas Blow Black GBB Pistol