COWCOW Technology 3L Hop Up Chamber for Marui 1911/ Hi-Capa GBB

COWCOW Technology 3L Hop Up Chamber for Marui 1911/ Hi-Capa 4.3/ 5.1 Aluminum Construction Design For Upgrade the Original Parts Suitable For Tokyo Marui 1911/ Hi-Capa 5.1/ 4.3 Gas Blow Back GBB Pistol Airsoft Guns