Description
OPF-FN509T, RMR is a solid state (one piece), steel plate designed for the FN 509 series, FN 545, and 510. OPF-FN509T, RMR is not compatible with 502 and Reflex.
OPF-FN09T, RMR is a one piece, billet machined plate for RMR/SRO, it is not guaranteed to work with non-Trijicon sights that have the RMR footprint. The way FN has designed the optics plate for the 509 Tactical is rather unusual to us, it consists of a MIM or cast steel plate with lugs for the RMR, and a larger plastic piece sans any lugs or means to prevent the sight from moving laterally. This isn’t a criticism for the FN design, we prefer a solid state design without moving parts.
OPF-FN509T, RMR is designed and made like other OPF plates that came before, with tight tolerances between the plate and slide, and between the optic and plate. Factory FN 509 Tactical sights remain compatible with OPF-FN509T, RMR and provide lower 1/3 co-witnessing.
OPF-FN509T, RMR includes the adapter plate, two 6-40 x 1/2 T10 screws (same spec as the plates/screws packet included in the 509 Tactical, the FN supplied screws also work on OPF-509T, RMR plate), and a packet of VC-3 thread locker. A proper torque wrench is required to impart the correct torque value to the mounting screws.
Torque value for the 6-40 x 1/2 T10 screws is 12 to 13 in lbs.
Proudly designed and made in the USA.
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