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FN 509C
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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
Model details
Manufacturer
FN
Model & version
FN 509C / 509C Tactical
Mounting details
MIL-STD-1913 Picatinny
Compatibility records
82
Lights & rail fitment
Sights
Sights
12 listed- Dawson Precision
Sight for FN 509, Fiber Optic Front,
Manufacturer documented - Meprolight
MEPRO CRIS MPO BACK UP IRON SIGHTS
Manufacturer documented - Night Fision
TRITIUM NIGHT SIGHTS FOR FN HERSTAL
Manufacturer documented - Trijicon
Bright & Tough Night Sights - FN509
Manufacturer documented
Also on this pistol
Holsters
5 makers- ANR Designchecked 2026-07-30
- Blackhawkchecked 2026-11-01
- Concealment Expresschecked 2026-11-01
- DeSantis Gunhidechecked 2026-11-01
- Tier 1 Concealedchecked 2026-11-01
Check each manufacturer’s options for your model, light and optic.
Triggers & internals
Grip & magwells
Optics & footprint adapters
Categories with no listings (10)
About the FN 509C
- Type
- Pistol
- Manufacturer
- FN
- Model & version
- FN 509C / 509C Tactical
- Mounting details
- MIL-STD-1913 Picatinny
- Width
- 1.35"
- Weight
- 25.5 oz
- Barrel length
- 3.7"
- Overall length
- 6.8"