Forward Controls Design OPF-FN509T Optic Plate – FN 509 Tactical, RMR

A one-piece steel optic plate that mounts a Trijicon RMR, SRO, RMR HD or RCR on FN 509 series optics-ready pistols.

The factory FN 509 Tactical mounting system pairs a steel plate carrying the RMR lugs with a larger plastic piece that has no lugs. The OPF-FN509T, RMR replaces both with a single billet-machined steel plate, made with tight tolerances between plate and slide and between sight and plate.

Key features

• One-piece steel plate — Billet machined, with no separate plastic spacer.
• Tight fit — Designed to fit snugly in the slide pocket and to hold the sight closely.
• Keeps factory co-witness — Factory FN 509 Tactical sights remain usable and give a lower 1/3 co-witness.

Compatibility and fitment

• Pistols: FN 509 series, FN 545 and FN 510. Not compatible with the FN 502 or FN Reflex.
• Sights: Trijicon RMR, SRO, RMR HD and RCR. Not guaranteed to work with non-Trijicon sights that use the RMR footprint.
• With the Trijicon RCR you must use the capstan screws supplied with the RCR.
• Because of slide and plate tolerances the plate can be a very snug fit in the pocket; this is intended.
• The screws supplied by FN with the 509 Tactical also work with this plate.
• A torque wrench graduated in in·lb is needed to tighten the screws to the stated values.

Technical specifications

In the box

• 1 × OPF-FN509T, RMR plate
• 2 × screws, 6-40 × 1/2 in, T10
• 1 × packet of Vibra-Tite VC-3 threadlocker

Model information