The FN 509 Midsize MRD is a 9mm striker-fired pistol designed for concealed carry and adaptable personal protection. Its midsize polymer frame provides a practical balance of controllability and portability, while the improved texturing on the interchangeable backstraps helps support a secure grip during recoil. The MRD configuration features FN's Low Profile Optics Mounting System for direct mounting of compatible miniature red dot optics and includes black co-witness iron sights. A flatter-faced trigger provides a consistent trigger press, and fully ambidextrous controls accommodate a wide range of users. The pistol includes two 10-round magazines and accepts larger-capacity FN 509 magazines when used with the appropriate sleeve.

Key features

• Optics-ready MRD slide accepts compatible miniature red dot optics with FN's Low Profile Optics Mounting System
• Midsize 9mm configuration offers a balance of concealed-carry portability and shooting control
• Flatter-faced trigger supports a more consistent and controllable trigger press
• Fully ambidextrous controls accommodate left- and right-handed operation
• Black co-witness iron sights provide a dependable aiming reference with a mounted optic
• Interchangeable textured backstraps help tailor hand fit and recoil control

The FN 509 Midsize MRD combines optics-ready capability, ambidextrous controls, and practical 10+1 capacity in a versatile concealed-carry pistol.