FN 509M Tactical 9mm 4.5in Threaded FDE Bundle
Specs at a glance
About this product
The FN 509M Tactical is a midsize, optics-ready semi-automatic pistol built for versatile use. It is chambered in 9mm and features a threaded 4.5-inch barrel and suppressor-height sights for use with muzzle devices and optics. The pistol uses FN’s low-profile optics-mounting system and includes an FDE (Flat Dark Earth) finish and polymer frame. Controls are configured to support ambidextrous operation for right- and left-handed shooters.
Key Specifications
- Chambered in 9mm for common defensive and range ammunition.
- Barrel measures 4.5 inches and is threaded to 1/2×28 for compatible muzzle devices.
- Finish is Flat Dark Earth (FDE) for a subdued, durable appearance.
- Equipped with Suppressor-height 3-dot night sights for co-witnessing with optics and use with muzzle devices.
- Features the FN Low-Profile Optics-Mounting System to accept a variety of micro red dot sights.
- Controls are fully ambidextrous to support both right- and left-handed operation.
- Frame material is polymer with FDE grip treatment for reduced weight and corrosion resistance.
- Overall length is 7.9 inches for a midsize balance of shootability and concealability.
The FN 509M Tactical is aimed at shooters who want a midsize platform that accommodates optics and muzzle devices without sacrificing practical handling. Its combination of a threaded barrel, optics-ready slide, suppressor-height sights and ambidextrous controls makes it suitable for a range of uses from everyday carry to duty or range use where modularity and reliability are priorities.
Key attributes
| upc | 845737017408 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 66-101710 |
| action | Striker Fired |
| atf type | Pistol |
| barrel length | 4.5" |
| caliber/gauge | 9mm |
| capacity | 10 + 1 |
| length | 12.5 |
| number of magazines | 5 10 rd. |
| package height | 3.3 |
| package width | 11.1 |
| product type | Semi-Auto Pistol |
| shipping weight | 4.7 |
| sights | Suppressor-Height 3-Dot NS |
| sights type | Night Sights |