The FN 509 MRD LE is a full-size 9mm semi-automatic pistol configured for law-enforcement use. Its striker-fired action, four-inch barrel, 17+1 capacity, and factory night sights provide a practical combination of duty capability and low-light aiming performance. The optics-ready slide accepts compatible red-dot mounting plates, while the ergonomic polymer frame includes interchangeable backstraps and grip panels for a more personalized fit. This no-manual-safety configuration includes three 17-round magazines.

Key features

• Optics-ready slide supports compatible red-dot sight configurations
• Factory night sights aid target acquisition in low-light conditions
• 17+1 capacity provides substantial on-duty and range firepower
• Striker-fired semi-automatic action offers a consistent trigger system
• Interchangeable polymer grip components help tailor hand fit and control
• Includes three 17-round magazines

The FN 509 MRD LE combines duty-focused ergonomics, night sights, and optics compatibility in a dependable full-size pistol configuration.