FN 545 MRD Comp 45 ACP 10rd Black

About this product

The FN 545 MRD Comp is a striker-fired, .45 ACP pistol with a factory-installed compensator and optics-ready slide, built for controlled performance in a carry or duty-ready package. It's part of FN's 500 series, which emphasizes modularity and modern feature sets over traditional heavy-frame service pistols. This model ships with two 10-round magazines, making it compliant for jurisdictions with capacity restrictions while delivering the terminal ballistics of the .45 ACP cartridge.

What is the FN 545 MRD Comp used for?

This pistol is engineered as a dual-purpose tool for daily carry and range training, specifically optimized for shooters who prioritize recoil control and optic compatibility. The factory compensator reduces muzzle flip by an estimated 15-20% compared to the non-compensated FN 545, making rapid follow-up shots more manageable. Its 10-round magazine capacity and 7.3-inch overall length make it a controllable option for belt or inside-the-waistband carry, though its 30-ounce weight requires a quality holster system.

How does the FN 545 MRD Comp compare to a Glock 41 MOS?

The FN 545 MRD Comp offers superior out-of-the-box recoil management but at a higher price point and with a 2-round lower capacity than the Glock 41 MOS. The Glock 41 MOS, a long-slide .45 ACP model, provides a 13-round standard capacity and a slightly longer sight radius but lacks a factory compensator, resulting in more pronounced muzzle rise during rapid fire. For the shooter focused on competition or duty where low muzzle flip is critical, the FN's integrated comp is a distinct advantage; for those prioritizing maximum round count and aftermarket support, the Glock platform may be more appropriate.

What does it weigh and what are the dimensions?

The FN 545 MRD Comp weighs 30 ounces (850 grams) unloaded and measures 7.3 inches in overall length with a 4.7-inch barrel. Its height with a magazine inserted is 5.6 inches, and the width across the slide is 1.45 inches. These dimensions place it squarely in the full-size service pistol category, comparable in footprint to a Springfield XD-M Elite Tactical OSP in .45 ACP but approximately 2 ounces heavier due to the steel compensator assembly.

Who is this NOT for?

This pistol is not ideal for first-time shooters or those seeking maximum concealment or the absolute lowest cost-per-round training platform. The .45 ACP cartridge generates significant recoil energy and ammunition costs roughly 40% more than 9mm, which impacts training volume. Additionally, the proprietary mounting plate system for optics requires careful attention to torque specs and thread locker—if you prefer the universal Doctor/Noblex footprint common on many rifle platforms, this system adds a layer of complexity.

What's in the box?

The factory case includes the pistol, two 10-round steel magazines, a set of four interchangeable backstrap panels (small, medium, large, and extra-large), a plastic grip plug tool, multiple MRD mounting plates (compatible with Trijicon RMR/SRO, Holosun 507C/508T, and Leupold DeltaPoint Pro footprints), mounting hardware with thread locker, a polymer bore brush, a cable lock, and a premium zippered soft case. Notably, the package does not include iron sights pre-installed for co-witnessing if an optic is mounted—those are a separate purchase.

Is the FN 545 MRD Comp worth it at $949?

At $949, this pistol justifies its price if you require a compensated, optics-ready .45 ACP platform out of the box and are willing to pay for FN's military-grade barrel and slide machining. The cost includes approximately $150 in value for the compensator and $75-100 for the mounting plate system compared to having these features installed aftermarket. However, for a shooter who doesn't need a compensator or intends to run irons only, a standard FN 545 or competing model from Smith & Wesson or Glock will save $200-$300.