FN 509 9mm Full Size 10-Round Handgun - 4" Barrel - Black

SKU: FN66-100003
MPN: 66-100003
Manufactured by FN America


Out of Stock


Out of Stock

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time can be 1-3 days.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.


FN America built the FN 509 to the strict specifications of the U.S. Military’s MHS program, building upon the proven design of the FNS-C. This striker fired, semi-automatic pistol is suitable for commercial, military, and law enforcement use. The FN 509 features a polymer frame, steel slide with front and rear serrations, and a cold hammer forged barrel for a long, accurate service life.

FN America is a subsidiary of FN Herstal, a global company with a proud, long-standing heritage. They are committed to providing high quality, dependable and innovative firearms. With an over 127-year history, FN Herstal continues to stand at the cutting-edge of commercial, law enforcement, and military firearms.

  • Striker-fired semi-automatic pistol chambered in 9mm
  • (2) 10-round magazines included
  • Polymer frame with 1913 MIL-STD Picatinny accessory rail
  • (2) interchangeable backstraps for customizable grip
  • Fixed 3-dot luminescent sights
  • Front and rear slide serrations for ease of operation in all conditions
  • 4” cold hammer forged barrel with recessed crown and 1:10 RH twist
  • Polished chamber and feed ramp
  • Overall length: 7.4”
  • Height: 5.56”
  • Width: 1.35”
  • Trigger pull: 5.5 - 7.5 lb
  • Sight radius: 5.79”
  • Weight: 26.9 oz
The FN 509, built from popular platform of the FNS Compact, was made to the intense and exacting specifications of the U.S. Military’s Modular Handgun System (MHS). To meet MHS standards in reliability, durability, and ammunition compatibility, rigorous testing was conducted over many months in the design and production of this firearm. As a result, the product that FN is bringing to market is of the highest quality in those categories, making it an ideal pistol for a long life of service to the user.

The FN 509 is a full-sized, black polymer framed pistol with a black steel slide and cold forged steel barrel. In the box, you’ll receive two 10-round, double-stack magazines. This means that the pistol is in compliance with large capacity magazine restrictions in states such as Colorado, California, New York, or the District of Columbia. It also ships with two additional backstraps, which can be added to the grip or removed to provide custom comfort for any size hands. Front and rear slide serrations make it incredibly easy to operate the slide in any conditions, even while wearing gloves.

The fixed, 3-dot sight system on the FN 509 Pistol is luminescent, making low-light situations easier to manage. The addition of a Picatinny rail on the underside of the barrel means you can easily attach your favorite accessories like a flashlight or laser-dot sight. All operation controls are ambidextrous, allowing the operator to lock the slide or release a magazine with either hand.

With FN’s long history of quality and innovation, the FN 509 pistol is an ideal choice for anyone looking for a full-size, polymer frame pistol. The battle-hardened history of FN means you can be confident that the FN509 will perform for years to come.


Barrel Length4.0
BrandFN America
Caliber Gauge9mm Luger
Frame SizeFull Size

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