Whether for duty use, range practice, or serious backcountry defense, a full-size 10mm pistol that’s red-dot ready and ergonomically refined changes the game. Precision, modularity, and stout terminal performance are the pillars any practitioner looks for in a defensive-sidearm.

FN 510 MRD delivers that combination in a package tuned for practical accuracy and control. Built around a 4.1″ target crown steel barrel and a flat dark earth PVD optic-cut/serrated steel slide over a polymer frame with a MIL-STD-1913 rail, this Semi Auto platform is engineered to carry 10mm Auto with a 10+1 capacity while remaining shooter-friendly. Shop this product

Design and ergonomics

The FN 510 MRD emphasizes controllability. An enhanced grip frame and two interchangeable backstraps let you tune hand fit for fast follow-up shots. The precision-tuned trigger pairs with a Low-Profile Optics Mounting System so the Holosun 407C included with the pistol co-witnesss with driftable steel sights while allowing a low and fast sight picture. Two magazines and four MRD mounting plates come in the box to simplify optic configurations.

Slide, barrel and rail

The 4.1″ target crown steel barrel is matched to a serrated, optic-ready steel slide finished in Flat Dark Earth PVD for durability. A MIL-STD-1913 Picatinny rail provides direct support for lights and accessories without modification.

Optics and sighting system

FN selected the Holosun 407C for this package, providing a reliable 2 MOA aiming point suitable for defensive distances while maintaining battery life and ruggedness. The optic cut and included mounting plates let you configure co-witnessed or lower 1/3 setups depending on preference. For shooters who value a red dot out of the box, this is a practical, ready-to-shoot configuration. View product details and pricing

Performance and applications

10mm Auto offers superior energy and penetration compared with common defensive calibers, making the FN 510 MRD a viable choice for those who need extra terminal performance in open-country defense or for duty scenarios where overmatching threats is a consideration. The combination of a tuned trigger, low optic mounting, and a stable chassis gives shooters confidence at tactical distances and in rapid engagement drills.

Priced at $949.99, the FN 510 MRD arrives ready with two magazines, a zippered case, a locking device, an owner’s manual, and accessory plates—an out-of-the-box defensive solution from FN, a manufacturer known for military-grade engineering. Check current availability and purchase options on our shop page; clicking any product link will take you to the retailer’s listing. Check current availability

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