Editor’s Note: The FN 509 Tactical is based on the pistol FN submitted for the US Army Modular Handgun Trials. While it is very much like the standard 509, the Tactical model features an optics-ready slide that allows for the low-profile mounting of red dots. Also included are tritium night sights, with the rear sights sporting protective wings to help avoid any damage during hard use. Present is a 4.5-inch cold hammer-forged threaded barrel. Controls are fully ambidextrous and the 509 Tactical comes with one 17-round and one 24-round magazine. Like the base model the 509 Tactical shines as a full-size duty pistol.