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- 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

- As always, upgrading GBB require necessary skill & technique, consult expertise if needed
 

Major Color : Black
Built Material : Metal


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