All components are CNC milled from a solid steel billet to ensure accurate, repeatable click adjustments for windage and elevation. The serrated rear leaf features a slight reverse angle to reduce glare and improve sight picture. Fully compatible with the factory front sight on Mk I and Mk II(TM) pistols. Fits RugerA(R) 22 pistols equipped with factory adjustable rear sight. No fitting required, uses factory dovetail; locks in place with two set screws. Mfg: Volquartsen SPECS: Steel, blue, matte finish. Blade - .767" (19.5mm) wide, .319" (8mm) high. Notch - .11" (2.7mm) wide, .07" (1.8mm) deep. Body - .70" (18mm) wide, 1.4" (3.6cm) long.