FN 545 MRD .45 ACP 4.1-inch Black
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
Key attributes
| upc | 845737015718 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 66-101389 |
| action | Single Action |
| atf type | Pistol |
| barrel length | 4.10" |
| caliber/gauge | .45 ACP |
| capacity | 10 + 1 |
| color | Black |
| length | 11.9500 |
| number of magazines | 2 |
| package height | 3.3 |
| package width | 11.2 |
| product type | Semi-Auto Pistol |
| safety | No |
| shipping weight | 4.0 |
| sights | Co-Witness Height Sights |
| sights type | Driftable Steel Co-Witness |
| slide description | Optic Cut/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |