AIP CNC Alumimun Hop-up set For Marui Hi-capa 5.1/4.3/1911

- Replace the standard Hop-up base
- Suitable for Tokyo Marui Hi-Capa 5.1 / 4.3 / 1911 Series Airsoft Gas Blow Black GBB Pistol
- Design for Use With Hop-up Chamber and Inner Barrel