Gun Rear sight for Ruger for Mark I and Mark II Models - KENSIGHT MFG.

Provides consistent accuracy through best manufacturing methods. Electro-exhaust machined from 4140 steel, heat treated to Rc 38-40, then vacuum tempered to help maintain these tolerances for many years to come. One piece blade is cut from solid steel bar, so don't fly apart when your most important hit. Consistent, click-adjustable ratchets in windage and elevation will give precise repeatability. Large blunt blade with fine serrations give a superior image over the factory adjustable front sight. This rear sight requires a higher front than the factory sight.