XS OR sights for Glock pistols are simple and low-profile back-up iron sights to maximize visibility through your optics window. XS OR sights eliminate the need for height calculations, giving you the perfect co-witness out of the box. The rear sight features blacked-out serrations to minimize glare. The front sight is available in two variations, users can choose between a standard blacked-out front or a front sight with a tritium dot for enhanced low-light performance. These purpose built back up iron sights are designed to enhance visibility through the optic window and be there should the optic fail. Features: Precision CNC machined steel Compatible with XS and Glock MOS plates Low Co-Witness Front sight available with or without tritium BlackNitride finish for corrosion resistance