FN 509M MRD Midsize 9mm 4″ Optic-Ready Pistol
About this product
The FN 509M MRD is a midsize, optic-ready service pistol designed for everyday carry and practical range use. It features a 4″ cold hammer-forged stainless steel barrel and the FN Low Profile Optics Mounting System for direct mounting of many miniature red dot optics. The pistol uses a polymer frame with enhanced texturing and interchangeable backstraps for adjustable ergonomics, and it ships with two magazines and a soft case. Controls and ergonomics are configured to support fast, repeatable operation in a compact package.
Key Specifications
- The chambering is 9mm Luger.
- The barrel measures 4 inches.
- The overall length is 7.4 inches.
- The unloaded weight is approximately 26.9 oz.
- The frame material is polymer.
- The slide is optic-ready with serrations.
- Optic mounting uses the FN Low Profile Optics Mounting System.
- The firearm ships with 2 magazines.
- Sights are black co-witness iron sights.
- Includes interchangeable backstraps for a customizable grip fit.
With an optics-capable slide, a controllable midsize footprint, and user-focused ergonomics, the 509M MRD is suited for concealed carry and everyday range work where fast, reliable performance and a compact package are priorities.