FN 509 Tactical 9mm 4.5" Threaded Barrel Flat Dark Earth

$781.28 5 in stock

FN 509 Tactical 9mm striker-fired pistol with 4.5" threaded barrel, optics-ready slide, suppressor-height night sights, and Flat Dark Earth finish. Includes two 10-round magazines.

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FN 509 Tactical: Purpose-Built for Modern Shooting

The FN 509 Tactical represents the evolution of FN's proven 509 platform, combining combat-tested reliability with modern tactical features. This is a serious handgun for serious shooters.

Core Design

Built on FN's proven architecture, the 509 Tactical features a cold hammer-forged stainless-steel barrel with a recessed target crown, polished chamber, and feed ramp. The striker-fired action delivers consistent, predictable trigger performance without a manual safety—a design choice that rewards proper training and discipline.

Optics Integration

The standout feature is FN's patented Low-Profile Optics Mounting System. This innovative design accepts more than ten commercially-available miniature red dot optics while maintaining co-witness capability with suppressor-height night sights. No slide milling required. The included slide cap features raised sight wings to protect iron sight alignment and a textured ramp for administrative handling.

Ergonomics and Control

  • Grip: Enhanced texture polymer frame with Picatinny rail for accessories
  • Controls: Fully ambidextrous slide stop and magazine release
  • Backstraps: Two interchangeable options for optimal hand fit
  • Sights: Suppressor-height night sights for optics co-witnessing

Barrel and Suppressor Ready

The 4.5-inch threaded barrel features ½" x 28 threads—the standard for 9mm suppressors. A thread cap with integrated O-ring prevents loosening during use.

What's Included

Two 10-round magazines and FN logo soft pistol case.

The FN 509 Tactical is engineered for shooters who demand reliability, accuracy, and modern features in a compact, controllable package.

Features

  • fn optics mounting system
  • ambidextrous slide stop lever
  • ambidextrous magazine release

Attributes

Action: DAO
Action: Striker Fired
Barrel Length: 4.5"
Barrel Type: 7.9"
Caliber: 9mm Luger
Capacity: 10+1
Case Type: Soft Case
Features: Not Specified
Finish: Applied Finish
Finish: Flat Dark Earth
Frame: Polymer Frame
Frame Finish: Flat Dark Earth
Frame Material: Polymer
Grips: Flat Dark Earth Polymer
Grips: flat dark earth textured interchangeable backstrap
Included Magazines: 2x10rd
Model: FN 509 Tactical
Model Series: 509 Series
Optic: No Optic
Overall Length: 7.9"
Safety: No
Safety: Trigger
Scope Cover Included: Not Specified
Sight Configuration: 3-dot night
Sight Style: Night Sights
Sights: Night Sights
Sights: Suppressor Height Night Sights
Slide Description: Optic Cut/Serrated
Suppressor: No
Thread Pattern: 1/2-28
Type: Pistol