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Best use in Conjunction with Metal Slide/Outer Barrel + High Flow Blow off Valve
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Recoil Spring produces stronger & faster blowback feel
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Hammer Spring increase the hammer tension resulting higher gas output, i.e. more power fps
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Suitable for Marui Hi-Capa 5.1 / 4.3 Series Airsoft Gas Blow Black GBB Pistol
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As always, upgrading GBB require necessary skill & technique, consult expertise if needed
Major Colour : Chrome
Built Material : Metal