Made for AK-47 & Variants with (MILLED RECEIVERS), The Chaos AK-47 Dust Cover Rail is manufactured to highest standards in the industry. This is a completely Field Strippable System. It Extends from the Sight Block to the rear of the dust cover. The Rear Rail Hinges open for dust cover removal and access. Our MIL-STD-1913 rails are made from aircraft grade 6061 Aluminum Alloy. Hard coat military specification MILITARY SPECIFICATION MIL-A-8625 or (Type III Hard anodize, Non-Reflective).(May require some file fitting).