The FN 509 Compact MRD Compensated delivers full-size performance in a compact concealed-carry package. Its striker-fired action pairs with a factory auto-indexing compensator to help reduce muzzle flip and support faster follow-up shots. The 4.2-inch cold hammer-forged barrel has a recessed target crown, polished chamber, and polished feed ramp. The FN Low-Profile Optics Mounting System accepts a wide range of miniature red dot optics, while all-black co-witness iron sights provide a dependable aiming option. An enhanced-texture polymer frame, interchangeable backstraps, fully ambidextrous controls, and a MIL-STD-1913 accessory rail complete the practical configuration.

Key features

• Factory auto-indexing compensator helps reduce muzzle flip for faster follow-up shots
• FN Low-Profile Optics Mounting System supports direct mounting of more than 10 miniature red dot optics
• All-black co-witness iron sights provide a clear backup sighting system
• Compact polymer frame with enhanced texturing and interchangeable backstraps improves control and concealment
• 4.2-inch cold hammer-forged barrel features a recessed target crown and polished chamber and feed ramp
• Includes one 12-round magazine and one 15-round magazine

The FN 509 Compact MRD Compensated combines compact carry dimensions, optics-ready capability, and controllable 9mm performance in a factory-compensated pistol.