Enjoy the accuracy of a fully adjustable, competition-style rear sight in a package suitable for daily carry. Beveled edges on sight body and radiused corners on blade minimize chances of snagging on clothing or holster. Blade, sight body, and base are EDM-wire machined from high-grade, 4140 billet steel, then heat-treated to Rc 28-32 to retain the extra-tight tolerances. Front hinge pin is hardened to Rc 60 for reliable, long-lasting service without breakage. Fine serrations on the rear sight blade surface reduce light reflection to enhance sight pick up in all light conditions. Consistent, click adjustable detents for windage and elevation provide precise, repeatable settings. Mfg: Kensight Mfg SPECS: 4140 steel, blued, matte finish. BM #1 - Fits pistols with the Bo-Mar BMCS rear sight dovetail. LPA Cut 1911 - Fits Springfield Armory, Para-Ordnance, Nowlin, High Standard, Olympic Arms, and Charles Daly 1911 Auto pistols with the LPA slide cut for adjustable sights.