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FN 509M Midsize Tactical 9mm 4.5″ FDE Optics-Ready

SKU: RSR|FN66-100745  ·  Condition: New

$862.00

Available in Warehouse

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Specifications
UPC 845737011604
Manufacturer

Manufacturer Part Number

66-100745

Action

Semi-Auto

ATF Type

Pistol

Barrel Length

4.5"

Caliber/Gauge

9mm

Capacity

24

Length

12.5

Model

FN509M

Number of Magazines

2 One 24 rd. and One 15 rd.

Package Height

3.2

Package Width

11.1

Product Type

Striker Fired

Safety

Non-Manual Safety

Shipping Weight

4.0

Sights

Suppressor Sights

Sights Type

3-Dot Night/Suppressor Height

Slide Description

Optic Cut/Serrated

Magazine Included

1 x 15-Round

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

About This Firearm

FN 509M Midsize Tactical in Flat Dark Earth with a 4.5″ threaded barrel. Optics-ready slide, suppressor-height night sights, FN low-profile optics mount, and two magazines included.

The FN 509M Midsize Tactical is a multi-role striker-fired pistol designed for everyday carry, duty applications, and training. It ships optics-ready with FN’s low-profile optics-mounting system and a 1/2″-28 threaded barrel compatible with common muzzle devices. The polymer frame in Flat Dark Earth includes an integral Picatinny rail and interchangeable backstraps for tailored ergonomics.

Key Specifications

  • The caliber is 9mm.
  • The barrel length is 4.5 inches.
  • The barrel is threaded (1/2×28).
  • The action is Semi-Auto.
  • The frame material is polymer with a Flat Dark Earth finish.
  • The slide is optics-ready with FN’s low-profile mounting system and serrations.
  • The sights are suppressor-height 3-dot night sights.
  • The package includes two magazines and a soft pistol case.
  • The weight is listed as 26.5 oz in supplied attributes (see notes).
  • The pistol features fully ambidextrous controls and interchangeable backstraps.

Balanced for controllability and outfitting with modern accessories, the FN 509M Midsize Tactical provides a purpose-driven platform for shooters who value modularity and durability. With optics compatibility, suppressor-ready threading, and an ergonomic midsize grip, it is configured to serve in carry, duty, or training roles while accommodating a range of magazine options.

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Massachusetts Notice
A valid Massachusetts LTC or FID is required to purchase this firearm. All sales are completed in-store at our Sutton, MA location. Need your LTC? We offer classes.