NIGHT FISION OPTIC PLATE 509T W/TRITIUM FRONT SIGHT FOR GLOCK FULL SIZE MOS Night Fision's Optic Plate + Backup Sight combo combines precision machining with enhanced low-light capability. Alongside our rugged, nitride-coated 17-4 stainless steel optic plate, this set includes a lower 1/3rd co-witness backup sight setup featuring a tritium front sight and a blank rear with anti-glare serrations-ideal for those who prefer a simplified, intuitive sight picture when transitioning between red dot and irons. This combo gives shooters an all-conditions solution without compromising performance. FEATURES Includes Night Fision Pistol Optic Plate Mfg: Night Fision