FN 509 Mid MRD 9mm Pistol – Black | 4″ Barrel | 10+1 Capacity

The FN 509 Mid MRD is a full-featured, optics-ready striker-fired pistol built for duty, home defense, and serious range use. Chambered in 9mm and featuring a 4-inch barrel, this mid-size variant strikes the ideal balance between concealability and shootability. The MRD (Modular Rail and optics-ready) designation means the slide is pre-cut for direct-mount red dot optics, allowing you to build your ideal sighting system without additional machining or adapters.

Constructed with an FN-engineered polymer frame and a cold hammer-forged stainless steel barrel, the 509 Mid MRD delivers the reliability and durability that FN is globally known for. The pistol ships with a 10+1 round capacity, making it fully compliant for restricted-capacity states, while accepting standard FN 509 series magazines for easy upgrades where permitted.

Key Features:
• Optics-Ready MRD Slide – Direct-mount compatibility for popular red dot sights
• 4″ Cold Hammer-Forged Barrel – Exceptional accuracy and long-term durability
• Striker-Fired Action – Consistent, predictable trigger pull
• Ambidextrous Controls – Magazine release and slide stop for left or right-hand shooters
• Low-Profile 3-Dot Sights – Co-witness capable with most red dot optics
• Integrated Picatinny Rail – Supports lights and lasers
• 10+1 Capacity – Restricted-state compliant
• Matte Black Finish – Corrosion-resistant and tactical in appearance

Whether you’re a law enforcement professional, a competitive shooter, or a responsible homeowner seeking a trusted defensive firearm, the FN 509 Mid MRD delivers world-class performance at a competitive price. Order online today at VanTon Arms and take advantage of our fast nationwide shipping to your preferred FFL dealer.