The XS Minimalist OR Sights are engineered as low-profile backup iron sights specifically for Glock 19 MOS pistols designed to maximize visibility through your optics window with perfect co-witness right out of the box.XS Minimalist OR Sights for Glock 19 MOSBlack Nitride Surface Treatment for durability and corrosion resistanceNon-tritium Front Sight for clean sight pictureBlacked Out Serrated Rear sight to minimize glareCNC Machined Steel construction for precision and reliabilityEliminates height calculations for optics co-witnessingPerfect for tactical applications competition shooting or any scenario where reliable backup sights are essential when running optics on your Glock 19 MOS platform.