COW G17 Gen4 120% Recoil Spring for TM G Model Series AAP01 Series ( AAP-01 ) Parts available in pistol length

available in pistol length

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GHK 551 Conversion Kit for GHK 553 GBBR ( BK )

COW G17 Gen4 120% Recoil Spring for TM G Model Series AAP01 Series ( AAP-01 ) Parts available in pistol lengthG17 Gen4 120% Recoil Spring Highlighted features Made from High Strength Spring Steel Hard Coating Prevents Corrosion Improve cycling efficiency For TM G17 Gen4 **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