The FN 545 MRD is a single-action-only .45 ACP semi-automatic pistol with a 15+1 capacity, 4.10-inch hammer-forged barrel, and optic-ready slide in Flat Dark Earth. It uses driftable steel co-witness sights and ships without a manual safety. 
 

Key Specifications 

• SKU: 2024014349 
• UPC: 845737015725 
• Brand: FN 
• Model Name: 545 MRD 
• Caliber: .45 ACP 
• Action Type: Single Action Only (SAO) 
• Capacity: 15+1 rounds 
• Barrel Length: 4.10 inches 
• Overall Length (OAL): 7.70 inches 
• Weight: 30 oz (1.875 lbs) 
• Grip Material: FDE Textured Polymer 
• Sights: Driftable Steel Cowitness 
• Trigger Pull Weight: Approximately 6 lbs 
• Safety Feature: None (No Manual Safety) 
   

Detailed Features 

The precision-tuned trigger has a clean break. Driftable steel co-witness sights can be adjusted for windage while maintaining co-witness height for use with mounted optics. The slide optic cut allows direct attachment of micro red dot sights. The full-size polymer frame keeps weight manageable while the FDE textured grip surface aids control. The hammer-forged barrel has a target crown. At 15+1, this is higher capacity than the standard FN 545 MRD configurations. 
 

Usage 

The 15+1 capacity makes this version of the 545 MRD more suitable for duty and competition use than configurations limited to 10 rounds. The optic-ready slide is practical for shooters who want a red dot on a full-power .45 ACP pistol. The FDE finish suits coordinated gear setups or tactical preferences. No manual safety requires a consistent administrative handling protocol.

The FN 545 in FDE with 15+1 capacity draws enthusiastic responses from shooters who want the power of .45 ACP with a meaningful magazine capacity. The higher round count compared to legacy 1911 single-stack configurations is frequently cited as a reason for the purchase.

Build quality and reliability get consistent positive marks. FN's manufacturing tolerances are tight, materials are well-chosen, and range reports on the pistol's cycling and accuracy are positive. The precision-tuned trigger performs predictably under rapid fire.

The optic-ready feature is popular. Shooters who mount red dots appreciate the co-witness height implementation, which lets them use the backup iron sights without removing the optic if it fails.

Ergonomics are favorable. The FDE textured grip is comfortable, adjustable backstraps accommodate hand sizes, and the ambidextrous controls work for left-handed shooters. The 30 oz weight keeps .45 ACP recoil manageable without feeling excessive in hand.

No manual safety draws comment from shooters who come from manual-safety platforms. Most adapt quickly; those who strongly prefer a safety lever may look at other options. Pricing and the need to purchase quality optics separately come up in cost-of-ownership discussions.