FN 509C MRD Compact 9mm 3.7″ FDE Optic-Ready

The FN 509C MRD is a compact, optics-ready pistol from FN America designed to deliver full-size performance in a smaller package. Chambered in 9mm with a 3.7-inch cold hammer-forged barrel, it features FN’s Low-Profile Optics Mounting System that accepts many miniature red-dot sights and co-witnessing iron sights. The polymer frame in Flat Dark Earth includes improved texturing, interchangeable backstraps, fully ambidextrous controls, and an integral Picatinny rail for accessories.

Key Specifications

• The caliber is 9mm.
• The barrel measures 3.70 inches and is cold hammer-forged with a recessed target crown.
• The frame finish is Flat Dark Earth.
• The slide is optic-ready and serrated.
• Includes two magazines and a soft pistol case.
• Features FN Low-Profile Optic Mounting System for direct mounting of many red-dot optics.
• Controls are fully ambidextrous.
• The frame material is polymer with a Picatinny accessory rail.
• The finish color is Flat Dark Earth.
• The overall length is 6.80 inches.

Compact, adaptable, and built with range-ready features, the FN 509C MRD blends a reduced footprint with FN’s modular design and optics compatibility. Its tough finish, interchangeability of grips, and accessory rail make it suitable for a range of practical uses, from everyday carry to disciplined range work where reliability and sighting options matter.