Competition plain, target-style, undercut blade with protected notch. Hangs over the rear of the slide and extends sight radius for quicker, more precise sighting. Lo-Mount has an angled top surface with mitered edges that won't snag on holsters or clothes. Rebated blade fights glare. Wide Notch (WN) has enlarged , .140" notch to provide more light around the front sight for a clearer sight picture and faster target acquisition. Helps aging eyes see front sight more easily. Browning Hi Power models fit the Mark II models. Mfg: Novak SPECS: Machined steel, matte blue finish. .125" (3.1mm) wide notch. Available with two tritium dots (2-Dot) or horizontal tritium bar (Bar). Wide Notch (WN) has .140" (3.6mm) notch. Competition - 1911 fits in factory dovetail. All Competition rear sight blades are .735" (18.7mm) wi