Compatibility
Fit recorded
- Model
- FN 509 Compact MRD
- Based on
- Manufacturer documented
Based on manufacturer documentation or support information.
Holosun page: mounts 407K/507K on FN 509 pistols with factory optic interfaces. Published only onto catalogue MRD / LOS (fn-los) hosts — not iron-only Fullsize, Midsize, or 509C.
Check your exact model and part before ordering. Fitment limits
Member experience
Tried this part on your FN 509 Compact MRD? Share how it went.
Loading community experience…