Each Weaver base is machined to tight tolerances for a custom fit. These Aluminum bases offer maximum strength for rings to hold tight. Includes custom-hardened fastening screws for mountingFits Anschutz 1568 (rear) CIL 950 & 950-C (rear) Ithaca LSA-55 & LSA-65 (front or rear) Modern Muzzleloader Knight MK-85 & KB-92 (front or rear) Modern Muzzleloader T-Bolt flat receiver (front or rear) Sako Whitetail Hunter (front or rear) Savage 10, 12, 16, 510, 512 & 516 short-action (rear) Savage Striker pistol (rear) Savage 110 E/S, 111, 112 R/V/FV & 116FSS long-action (rear) Savage 210 shotgun made before 2003 (rear) Savage 10 muzzleloader (rear) Shilen flat-top receiver (front or rear) Stevens 110E (rear)