The Primary Arms Extra High 30mm Tactical Ring mounts your 30mm scope to your 1913 picatinny rail rifle. One ring is included, held together by six Torx head screws. Constructed of high quality aluminum with a matte black anodized finish, this ring features a lifteme warranty. Features:Single ring only, great for mounting a red dot sightBlack Anodized finish6 torx screws for a secure hold