FN 509C MRD Compact 9mm, 3.7″ Barrel

The FN 509C MRD is a compact, optics-ready 9mm pistol designed to deliver full-size performance in a smaller footprint. It uses FN's Low-Profile Optics Mounting System to accept a wide range of miniature red-dot optics while retaining co-witness iron sights. The polymer frame has interchangeable backstraps and an integrated MIL-STD-1913 accessory rail for lights or other attachments. The pistol ships with two magazines and a soft pistol case.

Key Specifications

• The caliber is 9mm.
• The barrel length is 3.70 inches.
• The barrel is cold hammer-forged stainless steel.
• The frame material is polymer.
• The slide is optic-ready and has serrations for positive manipulation.
• The sights are all-black co-witness iron sights.
• The overall length is 6.80 inches.
• The finish is matte black.
• Included in the box are two magazines and a soft pistol case.
• The frame includes a MIL-STD-1913 (Picatinny) accessory rail for lights or accessories.

With its optics-ready slide, hardened cold hammer-forged barrel, and compact ergonomics, the FN 509C MRD offers a balanced platform for shooters who want modularity and practical utility in a smaller package. Its combination of accessory compatibility and straightforward controls makes it well suited for range use and everyday carry where a compact, feature-rich pistol is desired.