The Tekko Metal AR Carbine M-LOK Rail System replaces the plastic carbine factory handguard in minutes and requires no gunsmithing or special installation tools. Drop in, screwless, installation means no permanent alterations need be made to the rifle. The unit is held in place by the Delta ring and handguard cap. M-LOK attachment system provides secure mounting for M-LOK accessories such as MIL-STD 1913 Picatinny Rail attachments vertical grips, lights, lasers, bipods and other rail mounted kit. M-LOK system allows for universal modularity between numerous manufacturers of accessories, and accessory rails.