• FN 509 Midsize MRD 9mm Semi-Auto Pistol 3.8" Barrel
1 1

FN America

FN 509 Midsize MRD 9mm Semi-Auto Pistol 3.8" Barrel

FN 509 Midsize MRD 9mm Semi-Auto Pistol 3.8" Barrel

Buy on Ammo Depot

The FN 509 Midsize MRD is a 9mm Luger semi-automatic pistol built on a black polymer frame with a 3.8-inch barrel and a 22.5-ounce overall weight. Its midsize footprint and optics-ready design make it a practical choice for concealed carry, tactical use, and competitive shooting.

The pistol ships with two magazines, a 20-round and a 16-round, and features fiber optic sights for rapid target acquisition. The MRD cut accepts multiple optic footprints, so a wide range of red dot sights can be mounted directly to the slide.

Key Features

Brand FN America
Model 509 Midsize MRD
Caliber 9mm
Action Semi-Auto
Capacity 20
Barrel Length 3.8 in
Weight 22.5 oz
Color Black
Sights Fiber Optic
Frame Material Polymer
Slide Material Steel
Condition New

Highlights

  • 9mm Luger chambering with 20+1 capacity
  • 3.8-inch barrel and 22.5-ounce weight
  • Black polymer frame and slide
  • Fiber optic sights
  • Optics-ready (MRD) with multiple footprint compatibility
  • Includes 20-round and 16-round magazines

What's included

  • FN 509 Midsize MRD semi-automatic pistol
  • 20-round magazine
  • 16-round magazine

Frequently asked questions

What magazines are included with the FN 509 Midsize MRD?

The pistol ships with two magazines: one 20-round and one 16-round.

Is the FN 509 Midsize MRD compatible with red dot sights?

Yes, the MRD cut supports multiple optic footprints for direct mounting.

What is the barrel length of the FN 509 Midsize MRD?

The barrel measures 3.8 inches.

What type of sights does the FN 509 Midsize MRD have?

It features fiber optic sights for rapid target acquisition.

View full details