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FN 509 LS EDGE
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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 509 LS EDGE
Mounting details
MIL-STD-1913 Picatinny, FN Low-Profile Optics Mounting System
Compatibility records
104
Lights & rail fitment
Optics & footprint adapters
Optic Plates
11 listed- C&H Precision
FN 509, FN 510, and FN 545 V4 MIL / LEO to Holosun 407k / 507k / Vortex Defender CCW / C&H EDC / EDC Enclosed / Olight Osight S
Interface match - Holosun
KPLT-FN509
Manufacturer documented - Outerimpact
Red Dot Mount – MRA for FN 509 Pistol
Manufacturer documented - Shield Sights
FN509 - Optics Ready Low Profile Slide Mount for RMS/SMS
Manufacturer documented
Sights
Sights
5 listed- Dawson Precision
Sight for FN 509, Fiber Optic Front,
Manufacturer documented - Night Fision
TRITIUM NIGHT SIGHTS FOR FN HERSTAL
Manufacturer documented - Trijicon
Bright & Tough Night Sights - FN509
Manufacturer documented - Dawson Precision
Sight for FN 509, Fixed Carry Black Rear,
Manufacturer documented
Triggers & internals
Triggers
2 listed- Apex Tactical Specialties
Action Enhancement Kit for FN 509
Manufacturer documented - Apex Tactical Specialties
Striker Components Kit
Manufacturer documented
Takedown levers
1 listedRecoil Springs
1 listedGrip & magwells
Extended Magazine Releases
1 listedMagazines
3 listed- FN
509 9MM 24RD MAGAZINE KIT
Manufacturer documented - FN
509 LS Edge 17RD Mag
Manufacturer documented - FN
509 LS Edge 9mm 10rd Mag
Manufacturer documented
Also on this pistol
Holsters
2 makers- ANR Designchecked 2026-07-30
- Safarilandchecked 2026-11-01
Check each manufacturer’s options for your model, light and optic.
Categories with no listings (9)
About the FN 509 LS EDGE
- Type
- Pistol
- Manufacturer
- FN
- Model & version
- FN 509 LS EDGE
- Mounting details
- MIL-STD-1913 Picatinny, FN Low-Profile Optics Mounting System
- Width
- 1.35"
- Height
- 5.9"
- Weight
- 31 oz
- Barrel length
- 5"
- Overall length
- 8.2"