Z-Parts MK16 M LOK 15 inch Rail w/ Barrel Nut for Marui M4 MWS GBB Rifle

Z-Parts MK16 M LOK 15 inch Rail w/ Barrel Nut for Marui M4 MWS GBB Rifle Aluminum Construction M LOK System Handguard With 20mm Picatinny Rail on Top Come with Barrl Nut Suitable For Tokyo Marui MWS Series Gas Blow Back GBB Rifle Airsoft Guns