The FN 509 Tactical is optics-ready via a plate system, so it fits several footprints depending on which adapter plate you use. Here’s how it works.
How the FN 509 Tactical mounts an optic
- Brand
- FN
- Optic system
- FN 509 (plate-based)
The FN 509 Tactical uses the FN 509 plate system — it ships with adapter plates, so you pick the plate that matches your optic’s footprint.