FN 509 9mm Full Size MRD

The FN 509 MRD is a full-size 9mm pistol built for duty-style use, range training, and home defense scenarios where a full-frame platform is preferred. It is configured to accept miniature red dot sights via a low-profile optics mounting system and is packaged with multiple mounting plates for common footprints.

The pistol uses a polymer frame with enhanced grip texture and interchangeable backstraps for tailored ergonomics. The slide and barrel are finished in black and the barrel is described in the source material as a hammer-forged stainless design with a recessed target crown to protect the rifling.

Key Specifications

• The caliber is 9mm.
• The action is Semi-Auto.
• The weight is 26.9 oz.
• The frame material is Polymer.
• The frame finish is Matte Black PVD.
• The optic footprint is Multiple and the pistol features a low-profile optics mounting system for MRD sights.
• The model is 509.
• The size is Full Size.
• The pistol ships with 2 magazines.
• The included case is a FN Soft Case.

State Restrictions: This firearm is not available for direct shipment to California.

The FN America / FN Herstal 509 9mm MRD combines a full-size platform with optics-ready capability and robust construction. Buy the FN America / FN Herstal 509 9mm online today for a reliable full-size 9mm option that supports optics integration and modular ergonomics.