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IA Iron River Armory

FN 545 MRD .45 ACP 4.1-inch Black

SKUTSW|158113 Conditionnew CategorySemi Auto Handguns
$803.57
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About this product

The FN 545 MRD is a full-size, semi-automatic pistol chambered in .45 ACP designed for shooters who want a modern, optics-ready service pistol with proven ergonomics. It pairs a 4.1-inch cold hammer-forged crowned barrel with a polymer frame and a slide cut to accept multiple MRD footprints. Controls are designed for right- and left-handed operation with an ambidextrous slide stop and magazine release, and the package includes a premium zippered case and accessory mounting plates.

Key Specifications

  • The caliber is .45 ACP.
  • The action is semi-automatic.
  • The barrel measures 4.1 inches.
  • The firearm ships with two magazines (configuration may vary by market).
  • The frame material is polymer.
  • The slide is optic-cut/serrated to accept multiple MRD footprints.
  • The sighting system uses co-witness height fixed sights.
  • The weight is approximately 30 oz.
  • The overall length is 7.7 inches.
  • Other standard items include interchangeable backstraps and a premium zippered case.

The FN 545 MRD combines a purpose-built platform with modern ergonomics and an optics-ready slide for practical use on the range, in competition, or as a capable duty-sized service pistol. Its tuned trigger, durable striker system, and modular grip options make it straightforward to index and shoot accurately under real-world conditions, while the MRD-ready slide simplifies mounting a red dot without gunsmithing.

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Specs at a glance

FN 545 MRD .45 ACP 4.1-inch… SPECS AT A GLANCE 30 oz WEIGHT 4.1 inches SIZE
Editorial diagram — measurements verified during testing.
Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$803.57