FN 509 Full Size 9mm MRD 4.5″ Pistol – 17 Round – Multiple Colors

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This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.

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FN 509 Full Size 9mm 4.5″ Optics-Ready Semi-Auto Pistol

The FN 509 Full Size is a duty-sized 9mm pistol designed for personal defense and home protection. This double-action/striker-fired semi-auto features FN’s patented low-profile optics mounting system for easy micro red dot integration.

The 4.5″ cold hammer-forged barrel is made from stainless machine gun steel and has a recessed target crown to protect the rifling. The full-size slide provides a longer 6.3″ sight radius and reduced recoil.

Low-profile sights are included and co-witness with most red dots when installed using one of the four included mounting plates. The enhanced stippled grip has interchangeable backstraps for a customized fit.

Operating controls are completely ambidextrous, including the slide stop and magazine release. It ships with two 17-round magazines and an FN logo case.

Product Highlights:

  • Low-Profile Optics Mounting System
  • Cold Hammer-Forged Barrel
  • Enhanced Grip Texturing
  • Ambidextrous Controls
  • MIL-STD 1913 Accessory Rail
  • Includes 4 Optic Plates, Case

Specifications

  • Manufacturer: FN America
  • Model: 509 Full-Size MRD
  • MPN: FN66-100717, FN66-100722
  • Action: Double Action/Striker-Fired
  • Caliber: 9mm
  • Barrel Length: 4.5″
  • Barrel Type: Stainless Steel, Recessed Crown
  • Overall Length: 7.9″
  • Weight: 27 oz
  • Capacity: 17+1 Rounds
  • Sights: Co-Witness Optics-Ready
  • Grips: Interchangeable Backstraps
  • Color Options: Black or Flat Dark Earth

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