FN 509 MRD-LE 9mm Semi-Auto Pistol

The FN 509 MRD-LE is a 9mm semi-auto pistol built for professionals who demand consistent performance. Designed for law enforcement and informed by military feedback, this model features an optics-ready slide (MRD) for mounting red dot sights, a 4.5-inch cold hammer-forged barrel, and a robust polymer frame with aggressive texturing for a secure grip. The flat dark earth finish provides corrosion resistance and a low-visibility profile. It ships with three 17-round steel magazines, suppressor-height night sights, and a loaded chamber indicator. Whether you’re a target shooter, home defender, or duty operator, the 509 MRD-LE offers reliable cycling and a crisp trigger pull. At C.S. Firearms, we ship to all states where legal. This firearm requires an FFL transfer — please have your chosen dealer’s information ready at checkout. Add the FN 509 MRD-LE to your cart today for a capable, ready-to-configure sidearm.