Suitable for Marui Hi-Capa 5.1 / 4.3 Series Airsoft Gas Blow Black GBB Pistol
- Increase rate of fire due to slide blow back action reduce
- Short Stroke Recoil Spring
- Notes: Slide Lock will be disable
- As always, upgrading GBB require necessary skill & technique, consult expertise if needed

Built Material : Metal
Item Code : AIP019-MH