VFC Piston Base Fixer For Umarex / VFC Glock 17 Gen 3 GBB

VFC Piston Base Fixer For Umarex / VFC Glock 17 Gen 3 Design for Replace the Original Piston Base Fixer Suitable for Umarex / VFC Glock 17 Gen 3 Series Airsoft Gas Blow Back GBB Pistol