Wedge-shaped body with rounded edges provides a smooth, snag-free draw for concealed carry and competition guns. Sits low in the slide for minimum profile. Fine-line serrations on front and rear sight blades eliminate glare for best possible sight picture. Fits factory dovetail cuts; minor fitting may be required. Supplied as a front/rear set. Standard SlantPro rear sight has a rear face that slants slightly forward and a gently curved front face. Ledge(TM) models have a vertical, square-cut front face that provides extra purchase for one-handed slide racking. Mfg: Heinie SPECS: S&W M&P Ledge - Rear sight has .140" wide notch.