The FN America FN 545 MRD in Flat Dark Earth is a full-size semi-automatic pistol chambered in .45 ACP with a 4.4-inch barrel. It ships with two 15-round magazines and an MRD (Micro Red Dot) optic-ready slide cut. The FDE finish distinguishes this variant from the standard black configuration. A compensated version (MRD Comp) is also offered in this color. 
 

Key Specifications 

• Brand: FN America 
• Model: FN 545 MRD 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 15 rounds 
• Barrel Length: 4.4 in 
• Color/Finish: Flat Dark Earth (FDE) 
   

Detailed Features 

• Micro Red Dot (MRD) optic-ready slide cut 
• Ships with two 15-round magazines 
• Flat Dark Earth finish 
• Available in standard and compensated (MRD Comp) configurations 
• Full-size .45 ACP platform

Owners of the FN 545 MRD in FDE single out the finish quality as a primary draw. The Flat Dark Earth color holds up well to holster wear in their experience, and many owners pair it with FDE-colored accessories for a consistent look. The two-magazine package is the same practical value point noted across the 545 MRD line.

Function and ergonomics comments mirror what FN 545 MRD owners report generally. The 15-round .45 ACP capacity is the headline, and shooters who want that combination in a full-size platform find few competing options. Grip width continues to be the main ergonomic discussion point, with hand size making a noticeable difference in how comfortable the reach to controls feels.

The FDE variant tends to attract buyers who are also planning suppressor or compensator use, since the color coordinates well with common accessory finishes. Trigger feel gets the same consistent praise found across the 545 MRD line, described as having a clean break and short reset. A recurring note is that the slide serrations are aggressive enough to be effective but not uncomfortable for press checks.