Night Fision Optic Plate + Backup Sight Combo Features The Night Fision Optic Plate + Backup Sight Combo is machined from 17-4 stainless steel giving the plate the strength needed to maintain zero on a red dot sight through repeated recoil impulses on a full-size Glock MOS pistol. The plate fits Glock MOS models including the 19 17 45 and 47 though it excludes Slimline MOS variants and accepts the Trijicon RMR Holosun 507C and other optics sharing a compatible footprint. A nitride coating adds corrosion resistance and surface durability helping the plate maintain a clean secure fit over years of use. At 0.2 inches thick the plate keeps the optic riding low on the slide for a more natural sight picture. Included with the plate is a set of sights designed to co-witness with most optics that share this mounting footprint giving the shooter a reliable backup sighting option if the red dot goes down. Each package ships with extra screws and an installation tool making the mounting process straightforward without needing to source separate hardware. Night Fision built its reputation on precision co-witnessing sights and that focus carries over into this combo package. For Glock MOS owners adding an optic to a full-size pistol the Night Fision Optic Plate + Backup Sight Combo offers a complete precision mounting and backup sight solution. Night Fision Optic Plate + Backup Sight Combo Specifications Manufacturer: Night Fision Model: Optic Plate + Backup Sight Combo Type: Sight Color: Black Material: 17-4 Stainless Steel Finish: Nitride Compatible Hosts: Glock 17/19/45/47 MOS Trijicon RMR Holosun 507C Available At: GrabAGun