Weaver See-Thru Mounts
Integral Mount Lets You Use Both Iron Sight And Scope
Extra wide oval opening below the scope allows fast, unrestricted use of iron sights when you're too close to use a scope. All steel, four screw top strap gives 210deg surface contact for recoil-proof strength. Integral aluminum base means lighter weight. Mfg: Weaver SPECS: 1" (2.5cm) I.D. Overall height approximately 2" (5.1cm). 3 oz. (85g) per pair. Aluminum lower half, steel cap and screws. Satin blue or brushed stainless finish.