FN Herstal

FN 509 Midsize Tactical 9mm 24 Round Pistol 66-100837

SKU # 142095 Part # 66100837 UPC # 845737015169

$1,008.75

FN 509 Midsize Tactical 66-100837 Overview

The FN 509 Midsize Tactical 66-100837 is a 9mm pistol with a 4.5-inch threaded barrel, elevated night sights, and an optics-ready slide. Its midsize polymer grip leaves room for both hands while keeping the handgun's lower assembly relatively compact. The extended muzzle is the most visible part of its accessory-ready configuration.

The Tactical's tall sights contain illuminated elements, providing an aiming reference in low light. FN's mounting system accommodates supported miniature red dots above the reciprocating action. The barrel threads supply a separate connection for a compatible suppressor or other suitable muzzle attachment.

One 15-round magazine and one 24-round magazine accompany the FN 509 Midsize Tactical pistol. Two interchangeable backstraps adjust the rear grip contour, and a Picatinny rail sits under the dust cover. Overall length is approximately 7.9 inches, with weight at 27.9 ounces.

FN 509 Midsize Tactical Key Features

  • Threaded Barrel: A 4.5-inch barrel carries 1/2x28 threads for compatible suppressors and muzzle devices.
  • Patented Optic Mounting: FN's Low-Profile Optics-Mounting System accepts supported red dots.
  • Iron Sights: Elevated tritium sights provide illuminated aiming points.
  • Included Magazines: The FN 509 Midsize Tactical includes one 15-round magazine and one 24-round magazine.
  • Interchangeable Backstraps: In this configuration, the FN 509 Midsize Tactical features two interchangeable backstraps for grip fitting.

Specifications

MPN
66100837
Model
FN 509 Midsize Tactical
Caliber
9mm
Capacity
24 Round
Barrel Length
4.5"
Barrel Color
Black
Threaded Barrel
Yes
Thread Pitch
1/2x28
Frame Material
Polymer
Grip
Polymer
Grip Color
Black
Front Sight
Suppressor Height Night
Rear Sight
Suppressor Height Night
Overall Length
7.9"
Height
5.2"
Width
1.35"
Product Weight
27.9 oz
Includes
2 Interchangeable Backstraps, Picatinny Rail
Magazine Quantity
1 15 RD and 1 24 RD

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