COWCOW Technology New Gen Hop Up Chamber For Tokyo Marui Hi Capa GBB Airsoft

COWCOW Technology New Gen Hop Up Chamber For Tokyo Marui Hi Capa GBB Airsoft Metal Construction Airsoft Hop Up Chamber Design For Upgrade the Original Airsoft Internal Parts More Durable Suitable For Tokyo Marui Hi Capa Gas Blow Back GBB Airsoft Pistol