5KU 12.5 inch Aluminum M4 Carbine Outer Barrel for Marui M4 MWS Rifle (14mm CCW)

5KU 12.5 inch Aluminum M4 Carbine Outer Barrel for Marui M4 MWS Rifle (14mm CCW) Aluminum Construction Design For Replace The Original Parts Suitable For Tokyo Marui M4 MWS GBB Series Rifle Airsoft Guns