XS Sights' ready-made Optic Plate and Sight combo offers a one stop shop mounting solution, while increasing window visibility and providing a simple back up sight picture. XS OR Sights for Glock pistols are low-profile BUIS that do not obstruct your field of view. XS OR sights eliminate the need for height calculations, giving you the perfect co-witness out of the box. Designed for strength and reliability, the XS Optic Plates for Glock MOS pistols are available for ACRO footprint optics, providing a secure and seamless mounting solution. Product Features: Ready-made sight and plate combo - eliminates guess work and math 30% more thread engagement - helps prevent optic failure BlackNitride surface treatment - enhanced corrosion resistance Low co-witness - low enough to avoid distractions in optic window Tritium or non-tritium front sight - optional low light visiblility Blacked out serrated rear - reduces glare and distractions CNC machined steel - durable and American made Glock MOS compatible, fits ACRO footprint optics Kit includes: Optic plate, blue threadlocker, screws, torx bit, front sight, rear sight, and red threadlocker The plates will fit the following Glock MOS Models: 17, 19, 34, 45, 47, & 49