COW AAP01 Hammer Spring Set for AAP01 / G Model Series GBBP Series ( AAP-01 / AAP-01C / G17 G18 etc. ) ( 140% and 200% Hammer Spring ) Default Category/Others · Compatibility – Tokyo Marui

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COW AAP01 Hammer Spring Set for AAP01 / G Model Series GBBP Series ( AAP-01 / AAP-01C / G17 G18 etc. ) ( 140% and 200% Hammer Spring ) Default Category/Others · Compatibility – Tokyo MaruiFeatures Including 140% and 200% hammer spring Made from High Strength Spring Steel Enhances Blowback Kick For Action Army AAP01 & G Series **Important Notice** It may has a condition that your pistol cannot feed the BB bullet due to lightweight gas supply. You just simple remove a spacer to solve the issue. Alternatively, you may consult your gunsmith for advancing fitting to solve this issue as well. Increasing in FPS can be achieved; however, it