Tokyo Marui M4A1 Carbine (ZET System) GBB Sling Swivels

Tokyo Marui M4A1 Carbine (ZET System) GBB Sling Swivels Design For Replace the Original Parts #NGM4-62 #NGM4-63 #NGM4-64 Suitable For Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle