Angry Bear Arms
FN 509 Midsize MRD Sights
Browse parts and check the source behind each answer.
Manufacturer
FN
Model & version
509 Midsize MRD
Mounting details
MIL-STD-1913 Picatinny, FN Low-Profile Optics Mounting System
Parts listed
9 total
FN 509 Midsize MRDSights
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
Angry Bear Arms1
Based on manufacturer information — Aug 2026.
Dawson Precision3
Sight for FN 509, Fiber Optic Front,
Sight for FN 509, Fixed Carry Black Rear,
Sight for FN 509, Fixed Carry Fiber Optic Rear,
Meprolight3
MEPRO CRIS MPO BACK UP IRON SIGHTS
MEPRO HYPER-BRIGHT
MEPRO TRU-DOT SUPPRESSOR HEIGHT
Night Fision1
TRITIUM NIGHT SIGHTS FOR FN HERSTAL
Trijicon1
Bright & Tough Night Sights - FN509