Tokyo Marui M4A1 Carbine (ZET System) GBB Receiver

Tokyo Marui M4A1 Carbine (ZET System) GBB Receiver Design for Replace the Original Parts #MGG2-140 #MGG2-141 #MGG2-142 #MGG2-145 #MGG2-146 #MGG2-147 #MGG2-148 #MGG2-149 #MGG2-150 Suitable For Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle