DNZ Freedom Reaper Picatinny Rail Scope Mount/Ring Combo features a 1 tube diameter and 1.38 mount height with extra high ring height. Designed for rifle firearms, this 1-piece integrated base and ring combo interfaces with standard Picatinny rails. Constructed in matte black, it measures 4.25 long, 1.50 wide, 2.30 high, and weighs 4.25 oz. Includes mounting hardware for scope installation. 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.