FN 509C MRD Compact 9mm, 3.7″ Barrel, Black

About this product

The FN 509C MRD is a compact, optics-ready pistol built on the FN 509 platform for users seeking a reduced-size carry option with full-feature capability. Chambered in 9mm with a 3.7″ barrel and a recessed target crown, the model ships with two magazines and interchangeable backstraps for a customizable grip. FN’s Low-Profile Optics Mounting System accepts a wide range of miniature red dot optics while providing co-witness iron sights. The pistol pairs a polymer frame and accessory rail with a serrated, optic-ready steel slide for practical everyday use.

Key Specifications

• Caliber is listed as 9mm.
• The barrel measures 3.70″ and is described as cold hammer-forged with a recessed target crown.
• The barrel type is listed as Cold Hammer Forged, Recessed Target Crown.
• The slide is described as Optic Ready/Serrated with improved front and rear cocking serrations.
• Sight system: FN Low Profile Optics Mounting System with plate adapters for direct mounting of more than 10 optics.
• Frame material is Polymer with replaceable steel frame rails and an integral Picatinny accessory rail.
• Includes one 12-round and one 15-round magazine, plus a soft pistol case and locking device.
• Number of magazines included: 2.
• Controls are described as fully ambidextrous.
• Additional features include interchangeable backstraps and an enhanced flatter-face trigger.

Compact and purpose-built, the FN 509C MRD combines a shortened grip and optics-ready slide with proven 509 platform ergonomics. The included magazines and backstraps let you tailor the pistol to carry or duty roles while the low-profile optic system and co-witness sights support modern sighting options. This configuration is aimed at shooters who want a capable compact handgun with modular mounting options and practical controls.