Umarex Glock 17 Gen 3 Original Pistol O-ring (Set B/ # G173-08)

Umarex Glock 17 Gen 3 Original Pistol O-ring (Set B/ # G173-08) Rubber Construction Design For Replace the Original Parts Suitable For Umarex Glock 17 Gen3 Series Airsoft Gas Blow Back GBB Pistol Airsoft Guns