XS Minimalist 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.Features :Black Nitride Surface TreatmentTritium Front SightBlacked Out Serrated RearCNC Machined Steel