The FN 545 MRD pistol in FDE with a 4.1-inch barrel and 10-round capacity (brand part no. 66101390) brings a full-power .45 ACP striker-fired platform cut for a mini red dot optic, with a magazine configuration built for added-regulation states. FN America serrates the slide and mills it for direct optic mounting, and co-witness height sights line up with a mounted red dot for a consistent sight picture. This configuration ships without a manual safety, and two magazines are included. Among optics-ready semi-auto handguns, this 545 MRD configuration favors shooters in added-regulation states.

Key Specifications

• The chambering is .45 ACP.
• The capacity is 10 rounds.
• The barrel measures 4.1 inches, finished in FDE.
• The slide is optic cut and serrated, ready for a mini red dot.
• The sights are co-witness height sights, aligned with a mounted optic.
• The design has no manual safety, for a clean, fast presentation.
• Two 10-round magazines are included, built for added-regulation states.
• Rifled with a 1-in-16-inch twist rate.
• Shipping weight of approximately 4 pounds.

Frequently Asked Questions

What do co-witness sights provide? A consistent iron sight picture through a mounted red dot optic.

Why does this configuration use 10-round magazines? It’s built to meet added-regulation state capacity requirements.

Buy the FN 545 MRD Pistol, FDE

Full-power .45 ACP with red dot compatibility built for added-regulation states is exactly what this FN 545 MRD delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.