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. Browning HP require milling of slide, use 65Adeg x.495" dovetail cutter. HP fits later models with external, side extractors only. Lo-Mount has an angled top surface with mitered edges that won't snag on holsters or clothes. Rebated blade fights glare. Browning Hi Power models fit the Mark II models. Mfg: Novak