PRODUCT FEATURES Designed for Vector Optics Frenzy SCRD-36 & SCRD-37 Line Red Dot Sights with MOJ Footprint, For Use of G17 etc Regular Pistol without MOS system, Check Your Gunsmith for Reference SPECIFICATIONS For G17 etc pistols without MOS system Vector Optics MOJ footprint Mount Height Profile: 3mm 0.1in Length: 45mm (1.8in) Width: 27.5mm (1.1in) Weight (net): 15g (0.5oz) High quality aluminum alloy in durable black matte finish, section bar is made of steel Designed for real fire pistol Fit Vector Optics Frenzy SCRD-36 and SCRD-37 line red dot sights Remove the pistol rear sight before installation, check your gunsmith for reference