FN 509 Midsize Tactical 9mm 4.5″ Threaded — Matte Black
About this product
The FN 509 Midsize Tactical is a multi-role semi-automatic 9mm pistol designed for everyday carry, home defense and duty use. It features an optics-ready slide and a threaded cold hammer-forged stainless steel barrel for suppressor compatibility. The midsize frame balances shootability and concealability while offering a full-hand grip and enhanced ergonomics. Controls and ergonomics are set up for fast sight acquisition and consistent follow-up shots.
Key Specifications
- The model is FN 509 Midsize Tactical.
- The caliber is 9mm.
- The barrel measures 4.5 inches.
- The barrel is threaded (1/2×28).
- The optic interface is multiple optic footprints (FN Low-Profile Optics-Mounting System).
- The frame material is polymer.
- The exterior has a matte black finish.
- The sights are suppressor-height 3-dot night sights.
- The action is semi-automatic (striker-fired).
- Package contents include two magazines and a soft pistol case.
The FN 509 Midsize Tactical blends practical ergonomics and modular capability in a compact, duty-capable package. Its optics-ready slide, threaded barrel and hands-friendly controls make it a versatile choice for range use, duty tasks and defensive carry where a balanced, reliable platform is required.
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Specs at a glance
Key attributes
| upc | 845737015169 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 66-100837 |
| action | Striker Fired |
| atf type | Pistol |
| barrel length | 4.50" |
| caliber/gauge | 9mm |
| capacity | 15 + 1 |
| color | Black |
| length | 12.1000 |
| model | FN509M |
| number of magazines | 2 |
| package height | 3.4 |
| package width | 11.2 |
| product type | Striker Fired |
| safety | No |
| shipping weight | 3.7 |
| sights | Suppressor-Height 3-Dot NS |
| sights type | 3-Dot Night/Suppressor Height |
| slide description | Optic Ready/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (or) | NO SALE TO OREGON |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
| units per box | 1 |