Home / Guides / Best Holster for an FN 509: Compact, Midsize, and Tactical Fit Guide
The FN 509 is a solid, well-built pistol with a thin holster aftermarket. The Tactical version, which is what a lot of people own, adds a threaded barrel and a taller sight package that breaks a lot of otherwise fine holsters.
| Model | Barrel | Notes |
|---|---|---|
| 509 Compact | ~3.7" | Most concealable |
| 509 Midsize | ~4" | The carry sweet spot |
| 509 Tactical | ~4.5" + threaded | Threaded barrel, tall sights, optic-ready |
| 509 Edge / LS Edge | ~4.5" | Long-slide performance models |
Nothing in that list swaps into another's holster cleanly.
Three features break standard holsters:
FN's frame and trigger guard geometry are not Glock or SIG compatible. Generic "fits 500 models" holsters give you trigger guard gaps on a pistol with a short trigger.
Non-negotiable. Complete enclosure, no gap at the muzzle end or the frame junction.
The 509 is a substantial pistol with 15 or 17 rounds. You want a retention screw, tested with the gun upside down and shaken, not just snug friction.
Full-weight carry package. A proper gun belt and wide attachment footprint keep it from rolling.
The compact is the realistic concealed-carry 509: 3.7-inch slide, 12 or 15 rounds, and a full grip. Strong-side with a slight forward cant works well. Appendix is possible with a wedge, though the pistol is thicker than a micro-compact class gun.
Most people run a Tactical with a dot and often a suppressor. If you run a suppressor, the holster conversation changes entirely — you need a holster that will clear the can or you need to accept removing the can for carry. Decide which before buying.
Not reliably. The frame and trigger guard differ. A holster cut for a Glock 19 leaves gaps or binds on the FN trigger guard and will not retain correctly.
No. The threaded barrel is longer and the suppressor-height sights are taller, so you need a Tactical-specific holster with a threaded-barrel cut and sight relief.
Yes, with an optic-cut holster that clears the optic housing. The Tactical models are commonly run with a dot.
The Compact and Midsize models are. The Tactical and full-size models are excellent pistols but substantially harder to conceal.
Only holsters designed to clear the suppressor, or carry without the can attached. Most carry holsters will not accept a mounted suppressor.
Veteran-owned. IWB or OWB, left or right hand, red-dot ready. $98.99 with a fit guarantee.
Shop the Original Holster — $98.99