The XS Sights Minimalist Optic Mount provides a complete mounting solution for RMR footprint optics on Glock MOS pistols. This ready-made optic plate and sight combo features CNC machined steel construction with black nitride surface treatment for maximum durability and reliability.XS Sights Minimalist Optic Mount SystemCompatible with Glock MOS models: 17 19 34 45 47 & 49RMR footprint optic compatibilityLow co-witness backup iron sights included30% more thread engagement for secure mountingCNC machined steel with black nitride finishComplete kit: optic plate front/rear sights screws torx bit thread lockerLow-profile design maintains clear field of viewPerfect for shooters seeking a reliable one-stop mounting solution that eliminates height calculations while providing optimal co-witness and backup sight capability for their Glock MOS pistol.