- 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
- As always, upgrading GBB require necessary skill & technique, consult expertise if needed
Major Color : Gold
Built Material : Brass
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