Built to correct military specifications, with one important improvement. The barrel extension's inside diameter is just slightly undersized for a tighter fit to the barrel, resulting in a more accurate rifle.
• Hard Coat Anodized per Mil-A-8625F, Type III, Class2
• Dry Film Lube on interior bore per Mil-Specs
This product will not include the BCM logo etched on the receiver. It is marked “BCM4” over the gas tube hole