FN FN509

Overview

The FNH 509 is a modern, striker-fired 9mm handgun designed by FN Herstal/FN America for duty, self-defense, and civilian use. It features a durable polymer frame, a 4-inch barrel, and a 17-round magazine capacity in most configurations. Built for reliability and control, the FN 509 includes aggressive grip texturing, ambidextrous controls, and a MIL-STD-1913 accessory rail for lights or lasers. It was originally developed from FN's submission to the U.S. military handgun trials and is known for its rugged construction, consistent trigger pull, and ability to perform well under high-round-count testing, making it a popular choice for both law enforcement and personal defense.