This adjustable steel compensator enables you to easily fine tune how gas exits your rifle to find the “sweet spot” that significantly reduces or even eliminates muzzle rise. Simple setscrew system lets you close off certain exit ports to control gas outflow. Ports are not through-threaded, so the screws cannot be extended into the bullet path, and there’s a hard stop that helps prevent them from working loose under pressure. Muzzle cap unscrews to reveal threads to add a flash suppressor or other muzzle accessory to the Effin-A.
Big Book Catalog, Issue:66, Page:170
SPECS: Steel, oxide coating, matte black. 1” (2.5cm) O.D., 2” (5.1cm) long, approximately 4.6 oz. (130g) wt. AR-15/M16 for 5.56mm/.223 caliber rifles with ½”-28 tpi muzzle threads; AR-Style .308 for 7.62mm/.308 caliber rifles with 5⁄8”-24 tpi muzzle threads. AK-47 Style: 2” (5.1cm) long; 1” (2.5cm) O.D. 4.6 oz. (130g) wt. Fits AK-47 pattern rifles chambered in 7.62mm x 39 with 14 x 1 LH tpi muzzle threads. Includes spring washers or you may use traditional crush washer. Complete installation/tuning instructions included. Includes set screws for proper tuning.