Provides consistent accuracy through better production methods. Electro-discharge machined from 4140 steel, heat-treated to Rc 38-40, then vacuum tempered to help retain these tolerances for many years to come. One-piece blade is cut from solid steel barstock, so it won’t fly apart when your shot matters most. Consistent, click-adjustable detents for windage and elevation give precise repeatability. Large beveled blade with fine serrations give a superior picture over the factory adjustable sight. This rear sight does require a taller front than the factory sight.
Big Book Catalog, Issue:72, Page:320