Z-Parts MK16 DD GOV Aluminum Outer Barrel for Marui M4 MWS GBB Rifle (16 inch)

Z-Parts MK16 DD GOV Aluminum Outer Barrel for Marui M4 MWS GBB Rifle (16 inch) Aluminum Construction Suitable For Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle Essential for building the URGI complete gun if doing it from scratch