The Interarms 7.62x39 AKM is built on a U.S. manufactured 1 mm stamped receiver from demilled Hungarian kits. The matched bolt and front trunnion, combined with multiple head space checks in the build process, ensure the most accurate head spacing possible. The weapon ships fully 922r compliant. Interarms is proud to offer a hard chrome lined barrel and a custom Texas trigger group. We have a standard 1:9.5" twist barrel and 1:14" left hand barrel thread.