The VLTOR 7.62MM/.308 Compensator (VC-301) has an outer diameter of 22mm NATO Spec. All Compensators come with Crush or Peel-Away Washers. Like all Vltor products, we recommend the installation to be performed by a qualified gunsmith and/or experienced armorer.
Model VC-301, Cal. 7.62, Muzzle Thread 5/8-24
When mounted to a 14.5-inch barrel, overall length extends 16 inches.