FN 509® Midsize


Available for commercial, law enforcement, and military.

It’s an easily concealed package that delivers accuracy and reliability. Whether you’re carrying for self-defense or practicing at the range, this pistol strikes the perfect balance.

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Buy FN 509 Midsize Pistol Online

The FN 509® Midsize is a concealed carry pistol that seamlessly blends compact dimensions with full-sized performance. Designed for those who demand precision and versatility, this striker-fired handgun delivers exceptional accuracy and rapid target acquisition.

Key Features:

  1. Low-Profile Optics Mounting System (MRD): The 509 Midsize features FN’s patented MRD system, allowing you to easily mount your preferred red dot sight. Whether it’s a Trijicon RMR, Holosun, or other popular optic, the 509 Midsize accommodates them all. The co-witness front and rear sights ensure reliable backup aiming.
  2. Auto-Indexing Compensator: The built-in compensator significantly reduces muzzle flip, enhancing follow-up shots. Experience better control and faster target reacquisition during rapid fire.
  3. Concealed Carry Ready: With its compact dimensions, the 509 Midsize is ideal for discreet carry. It strikes a balance between firepower and concealability, making it suitable for everyday use.


  • Caliber: 9mm
  • Operation: Double-action
  • Magazine Capacity: Available in 10 or 12/15 rounds
  • Weight: 25.5 oz.
  • Barrel Length: 4.0″
  • Overall Length: 7.4″
  • Twist Rate: 1:10″ RH
  • Height: 5.2″
  • Width: 1.35″
  • Trigger Pull: Adjustable from 4.5 to 6.7 lbs.
  • Sight Radius: 5.4″

Construction Details:

  • Slide: Constructed from polymer and featuring replaceable steel frame rails, the slide houses a cold hammer-forged stainless-steel barrel with a recessed target crown. The polished chamber and feed ramp enhance reliability.
  • Frame: The interchangeable grip accommodates various hand sizes. Ambidextrous controls facilitate manipulation, while the grip texture ensures a secure hold.

The FN 509 Midsize is not just a concealed carry pistol; it’s a platform for customization. Whether you’re a competitive shooter or a self-defense enthusiast, this pistol adapts to your needs. Install your favorite optic, fine-tune the trigger, and experience world-class performance.

FN 509 Midsize combines innovation, precision, and practicality, making it an exceptional choice for those who demand excellence in their concealed carry firearm. Elevate your shooting experience with FN’s cutting-edge design!

!FN 509 Midsize For Sale



FN America

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FN America, a subsidiary of the renowned FN Herstal, stands as a beacon of excellence in the world of firearms. With a storied history and an unwavering commitment to quality, FN America has earned its place as a global leader in the industry. FN is a global leader in the development and manufacturing of high-quality, reliable firearms for military, law enforcement, and commercial customers worldwide. FN offers some of the best semi-automatic rifles and pistols on the market, as well as individual firearm parts, accessories, and apparel. Dury Guns Shop carries several top FN products, including the Five-Seven, PS90, FN15, SCAR, and more. FN is passionately committed to providing dependable, innovative firearms of the highest quality to our customers who rely upon us to enhance their performance and safeguard their lives.

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