Made for the Vepr 12 Shotgun. The Chaos V12 Apollo M-LOK Rail is manufactured to the highest standards in the industry. This is a rugged yet lightweight M-LOK rail system. The M-LOK Rail Forends & Systems are made from aircraft grade 6061 Aluminum Alloy. Hard coat military specification MILITARY SPECIFICATION MIL-A-8625 or (Type III Hard anodized, Non-Reflective).(May require some file fitting).