Game Reaper Scope Mount/Ring Combo features a 1 tube diameter and 1.06 mount height with medium ring height. Precision-machined from a single block of billet aluminum, this 1-piece matte black mount screws directly to the receiver of Ruger American Rimfire rifles. Includes scope rings and mounting hardware. Specifications: 3.82 length, 1.49 width, and 1.84 height, weighing 3 oz. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.