FN 509C MRD Compensated Compact FDE 9mm

The FN 509 Compact MRD Compensated is a striker-fired, optics-ready compact pistol finished in Flat Dark Earth. It pairs a proprietary auto-indexing compensator with FN's Low-Profile Optics Mounting System to reduce muzzle flip and accept a wide range of miniature red dot optics. Controls are fully ambidextrous and the package includes interchangeable backstraps, magazines, and an FN soft case.

Key Specifications

• Caliber is 9mm for standard defensive and range use.
• Operation is striker-fired for consistent trigger characteristics.
• Barrel type is compensated with an auto-indexing compensator to mitigate muzzle flip.
• Frame finish is Flat Dark Earth on a polymer frame.
• Weight is listed as 25.5 oz. in manufacturer materials.
• Sights and optics: Low-profile optics mount with co-witness iron sights.
• Controls: Full ambidextrous slide stop and magazine release.
• Included accessories: Interchangeable backstraps and FN logo soft pistol case.
• Magazine configuration varies; the package is reported as including two magazines in supplied materials.
• Additional features include FN compensator and low-profile optic mount system.

This compact FN 509 variant is designed for shooters who want a balance of controllability, optics-ready modularity, and a compact footprint suitable for everyday carry or duty use. With ambidextrous controls, an optics-compatible slide, and a compensator to aid follow-up shot recovery, it delivers a practical combination of features for modern carry and range use.