The FN 509 MRD is a full-size, optics-ready duty-style pistol built for users who want a stable platform for everyday carry, range work, or home defense. It pairs a polymer frame with an extended slide and frame geometry to reduce felt recoil and support consistent follow-up shots. The slide accepts low-profile red-dot optics via FN’s optics mounting system while retaining co-witness iron sights. The pistol ships with interchangeable backstraps and two magazines to support varied hand sizes and readiness needs.
Key Specifications
- Chambered in 9mm Luger for widely available ammunition options.
- Operation is striker-fired semi-automatic for consistent trigger function.
- Magazine capacity of 17 rounds in standard configuration.
- Includes two 17‑round magazines and an FN soft case.
- Built on a polymer frame with enhanced grip texture and three interchangeable backstraps.
- Weight listed at 26.9 oz for the unloaded pistol.
- Overall length measures 7.9 inches for a full-size ergonomic platform.
- Equipped with the FN Low-Profile Optics Mounting System and multiple mounting plates for common red-dot footprints.
- Slide features an optic cut and serrations for positive manipulation and sight mounting.
- Ships with four MRD mounting plates to support a range of optic footprints.
The FN 509 MRD offers a balanced, full-size platform for shooters who prioritize a secure grip, optics capability, and straightforward controls. With its optics-ready slide, included mounting plates, and interchangeable backstraps, it adapts to a variety of users and set-ups while providing a reliable, modern striker-fired interface.
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