BJ TAC Bolt Carrier Hammer Assist For Tokyo Marui MWS GBB Airsoft Rifle (Blue)

BJ TAC Bolt Carrier Hammer Assist For Tokyo Marui MWS GBB Airsoft Rifle (Blue) Metal Construction Design For Upgrade the Original Bolt Carrier Hammer Assist Suitable For Tokyo Marui MWS M4 Series Gas Blow Back GBB Rifle Airsoft Gun