Night Fision Optic Plate + Backup Sight Combo Features The Night Fision Optic Plate and Backup Sight Combo is machined from premium 17-4 stainless steel and built to the tightest tolerances ensuring the plate withstands harsh recoil while maintaining a secure accurate fit on a Glock MOS slide. The plate is cut specifically for the Holosun 509T footprint giving shooters a precise mounting surface without the play or shifting that can come with a poorly fit aftermarket plate. A nitride coating adds extra protection against corrosion and wear and the package includes extra screws and an installation tool to make setup straightforward. This combo fits Glock MOS models such as the 19 17 45 and 47 excluding Slimline variants. Bundled with the plate is Night Fision s tritium front sight paired with a black rear sight giving the shooter a reliable backup sighting system that glows in low light without batteries. Because the sights are designed to co-witness with most optics sharing the 509T footprint a shooter can still reference the iron sights through the optic s window if the red dot ever fails. A yellow front sight insert stands out clearly against the black rear speeding up target transitions in both bright and low light conditions. The Night Fision Optic Plate and Backup Sight Combo is available for sale at GrabAGun for Glock MOS owners who want a complete precision-built mounting and sighting package. Night Fision Optic Plate + Backup Sight Combo Specifications Manufacturer: Night Fision Model: Optic Plate + Backup Sight Combo Type: Night Sight Color: Black Material: 17-4 Stainless Steel Finish: Nitride Compatible Hosts: Glock 17/19 MOS Holosun 509T Available At: GrabAGun