The FN 509 Tactical 9mm 4.5in 10rd/24rd FDE, model number FN 66100373, is a premier tactical handgun designed for both professional and enthusiast shooters who demand reliability and versatility. This FN firearm, finished in a striking flat dark earth, is an evolution of the FN 509 series, incorporating enhancements from FN's submission for the U.S. Army's Modular Handgun Trials. At the heart of this 9mm pistol is a 4.5-inch cold hammer-forged stainless steel threaded barrel, engineered for precision and durability, and ready to accommodate most 9mm suppressors with its x 28 threads. The barrel's target crown and integrated O-ring thread cap ensure consistent performance and prevent loosening during use. The FN 509 Tactical is suppressor-ready, featuring a low-profile optics mounting system that supports over ten commercially available miniature red dot sights, allowing for co-witnessing with the suppressor-height night sights. This innovative optic cut design ensures adaptability to future optics without the need for direct slide milling. The stainless steel slide, serrated for enhanced grip, is complemented by a slide cap with raised sight wings, protecting iron sight alignment and providing a textured ramp for efficient slide racking. The flat dark earth polymer frame is equipped with a Picatinny rail, offering ample space for tactical accessories, while the ergonomic design ensures a comfortable grip. With a choice between 10-round and 24-round magazines, the FN 509 Tactical maximizes ammunition capacity without compromising on carry convenience, making it an ideal choice for tactical applications, self-defense, and competitive shooting. The FN 509 Tactical is not just a firearm; it is a testament to FN's commitment to innovation and quality, offering a robust platform that meets the demands of modern shooters. Whether you are a professional in the field or a civilian looking for a reliable tactical handgun, the FN 509 Tactical in flat dark earth is engineered to deliver exceptional performance and adaptability.