The Night Fision Optic Plate + Backup Sight Combo delivers premium co-witnessing sights paired with a precision optic mounting solution for Glock MOS pistols. Machined from 17-4 stainless steel with nitride coating for maximum durability and recoil resistance.Night Fision Optic Plate + Backup Sight ComboCompatible with Glock MOS models (17 19 45 47 etc. - excludes Slimline)Fits Trijicon RMR and other compatible mounting footprint opticsCo-witnessing sights work with most optics sharing this footprint17-4 Stainless Steel construction with nitride coatingIncludes extra screws and installation toolBuilt to the tightest tolerances for secure accurate fit and designed to withstand harsh recoil conditions. Perfect for shooters seeking a reliable mounting solution with backup iron sights for their red dot optic setup.