NF PLATE+BS 509T FITS GLOCK FS MOS

Description

Night Fision’s Optic Plate and Backup Sight Combo gives Glock full-size MOS pistol owners a single-purchase solution for mounting a Holosun 509T while retaining usable iron sights. That combination matters because the 509T’s footprint sits lower and wider than many competing red dots, and most standard backup sight setups either conflict with the optic body or leave the shooter with no usable co-witness at all.

The plate itself is machined to the MOS adapter dimensions so it drops directly into the factory mounting system without requiring frame modification. The backup sights included in the combo are designed to be visible alongside the 509T rather than simply stored under it — a meaningful distinction when you are running a optic-forward carry setup and need a fallback that actually functions if the dot goes dark or the battery dies under demand.

Night Fision builds their backup sights around tritium inserts, which means the sight picture is available in low light without batteries or any active step from the shooter. The front and rear sight geometry is matched to work with the plate height, so the point of impact relationship holds whether you are on the optic or the irons. Buying the plate and sights together rather than sourcing them separately removes the guesswork around stack height and co-witness alignment — two variables that can send you back to the bench multiple times if you piece together components from different manufacturers.

This combo is built specifically for full-size Glock MOS models. Verify your slide’s MOS pattern before ordering, as Glock uses different adapter dimensions across its MOS lineup and this plate is not cross-compatible with all of them.