FEATURES: Recoil compensator for AK-47 style rifles 14x1 left hand threads Includes polymer washer to mate solidly against the front sight tower Washer is heat resistant up to 900 degrees Length: 1.95" Diameter: .875" Weight: 2.4 oz. Matte black finish For use on weapons with a bullet diameter equal to or less than .30 cal or 7.62mmBENEFITS: Recoil compensator that not only lessens the recoil of your AK-47, but does so without a significant increase in blast noise directed toward the shooter or individuals next to the shooter Included washer and notched rear end ensure proper indexing of ports Matte black finish matches the standard finish on AK-47 rifles well Instructions are included A high heat polymer washer is included for those needing to add a spacer between the front sight base and the compensator