FN 510 MRD | 10mm Auto | 4.1″ | 15+1 | FN 66101857

The FN 510 MRD is a full-size, striker-fired 10mm pistol with a 4.1-inch cold hammer-forged steel barrel and an optics-ready slide. It ships with a Holosun HS407C red dot installed and two 15-round magazines, and is built around a polymer frame with interchangeable backstraps for tailored ergonomics. The design emphasizes controllability for powerful 10mm loads while remaining suitable for extended range sessions and field use. For an alternative optic under $1,000, the included Holosun HS407C pairs directly with the MRD footprint and supports rapid target acquisition without adding significant weight.

Product Specifications

• The UPC for this item is 845737018245.
• The caliber is 10mm Auto.
• The barrel length is 4.1 inches with a recessed target crown.
• The listed magazine capacity is 15+1 rounds.
• The package includes 2 magazines and 4 MRD mounting plates.
• The slide is described as optic cut and serrated and ships optics-ready.
• The frame material is polymer with a MIL-STD-1913 accessory rail.
• The handgun weight is 31 oz.
• The overall length is 7.7 inches with a sight radius of 6.1 inches.
• The sights are co-witness height steel iron sights compatible with the MRD footprint.
• The barrel material is steel with a twist rate of 1:16 RH.
• The included optic is a Holosun HS407C.

The FN 510 MRD offers a balanced package for shooters who want a full-size 10mm pistol ready for practical range work and large-game hunting applications where the 10mm cartridge is appropriate. Its optics-ready slide, included red dot, and interchangeable backstraps make it straightforward to set up for consistent follow-up shots and improved sighting at varied distances. The MRD’s combination of a target-crowned barrel, tuned trigger, and robust slide/frame construction delivers predictable performance shot-to-shot while remaining user-friendly for experienced shooters who prioritize accuracy and reliability.

Users have praised the FN 510 MRD for its crisp trigger and comfortable ergonomics. Owners also note appreciation for the optics-ready slide and the inclusion of the Holosun HS407C for immediate use.