Unicorn Airsoft Hop Up Chamber for Umarex(VFC) G Series Gen 4/ 5 (Hop Up Chamber Only)

Unicorn Airsoft Hop Up Chamber for Umarex(VFC) G Series Gen 4/ 5 (Hop Up Chamber Only) Steel Construction Airsoft Hop Up Chamber Design For Replace the Original Hop Up Chambe Suitable For Umarex (VFC) G Series Gen 4/ 5 Gas Blow Back GBB Pistol