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FN 509 Tactical 9mm 4.5in Threaded Barrel – FDE

FN 509 Tactical 9mm 4.5in Threaded Barrel – FDE

$819.00

FN 509 Tactical 9mm Luger pistol in Flat Dark Earth with a 4.5″ cold hammer-forged threaded barrel, optic-cut slide, polymer frame with MIL-STD-1913 rail, and suppressor-height night sights.

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SKU: BILL|FN 66100383Categories: Semi Auto HandgunsTags: Online Only

The FN 509 Tactical is an optics-ready 9mm semi-automatic pistol in a Flat Dark Earth finish built on the FN 509 platform. It features a cold hammer-forged stainless-steel barrel measuring 4.5 inches with a recessed target crown and 1/2×28 threads. The slide uses FN’s Low-Profile Optics Mounting System and an optic-cut/serrated stainless-steel slide; the polymer frame includes an enhanced grip texture and a MIL-STD-1913 accessory rail. Controls are configured for ambidextrous operation and the pistol ships with suppressor-height night sights for use with co-witnessed optics.

Key Specifications

  • The caliber is 9mm Luger.
  • The barrel measures 4.5 inches and is cold hammer-forged with a recessed target crown.
  • The barrel thread pattern is 1/2×28.
  • The action is Semi-Auto with a striker-fired design.
  • The frame material is Polymer finished in Flat Dark Earth.
  • The pistol is equipped with suppressor-height night sights.
  • The slide includes an optic-cut, serrated stainless-steel slide compatible with FN’s low-profile optics mounting system.
  • The pistol features ambidextrous slide stop lever and magazine release.
  • The overall length is 7.9 inches and the weight is 27.9 oz.
  • The optic footprint is listed as multiple to accept a range of miniature red dot optics.

The FN 509 Tactical delivers an optics-ready, threaded-barrel platform with night sights and rugged FN construction. Its combination of an optics-compatible slide, threaded cold hammer-forged barrel, and ambidextrous controls makes it suitable for precision-oriented range work and duty-style applications where modularity and reliability are priorities.

Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.

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UPC

845737009144

Manufacturer

FN America / FN Herstal

Manufacturer Part Number

66-100383

Action

Pistol

ATF Type

Pistol

Barrel Length

4.5"

Caliber/Gauge

9mm

Capacity

10 + 1

Length

12.5

Number of Magazines

2

Package Height

3.5

Package Width

11.5

Product Type

Pistol

Rate of Twist

1:10"

Safety

No

Shipping Weight

3.7

Sights

3-Dot Night/Suppressor Height

Sights Type

3-Dot Night/Suppressor Height

Slide Description

Optic Cut/Serrated

Magazine Included

Yes

Model

509

State Restriction (CA)

NO SALE TO CALIFORNIA

State Restriction (IL)

NO SALE TO ILLINOIS PICA

Units per Box

1

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