Umarex Magazine O-Ring For VFC Glock 19 Gen 3/4 GBB Pistol Airsoft Gun (#03-12)

Umarex Magazine O-Ring For VFC Glock 19 Gen 3/4 GBB Pistol Airsoft Gun (#03-12) Rubber Construction Airsoft O-Ring Design For Replace the Original Parts Suitable For Umarex (VFC) Glock G19 Gen3/ Gen 4 Gas Blow Back GBB Airsoft Pistol