VFC Hop Up Rubber For Umarex / VFC Glock 17 Gen 3 GBB

VFC Hop Up Rubber For Umarex / VFC Glock 17 Gen 3 Rubber Made Design for Replace the Original Hop Up Rubber Suitable for Umarex / VFC Glock 17 Gen 3 Series Airsoft Gas Blow Back GBB Pistol