FN
FN 509 Compact MRD Magazines
Browse parts and check the source behind each answer.
Manufacturer
FN
Model & version
509 Compact MRD
Mounting details
MIL-STD-1913 Picatinny, FN Low-Profile Optics Mounting System
Parts listed
5 total
FN 509 Compact MRDMagazines
What the compatibility labels mean
How we knowHow we check compatibility
- Lab testedFit checked by Firearm Lab for the recorded setup.
- Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
- Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.
Check your exact model and part before ordering. Fitment limits
FN5
Based on manufacturer information — Oct 2026. 509 Compact 9mm 10 Round Magazine
509 Compact 9mm 12 Round Magazine
509 Compact 9mm 15-Round Magazine with Sleeve
509 Compact 9mm 17rd Magazine with sleeve - FDE