The Springfield Armory Echelon 4.5F represents a modern evolution of the striker-fired duty pistol, engineered with superior ergonomics, modular flexibility, and uncompromising durability. Built around a robust stainless steel chassis system, the Echelon delivers structural strength and adaptability in a platform designed for professional use, defensive carry, and high-volume training. This Gear Up(TM) configuration includes a factory-installed Viridian RFX11, providing a fast, intuitive green dot aiming solution with Instant-OnA(R) technology and up to 30,000 hours of runtime. Paired with Springfield's revolutionary optics mounting system, the Echelon offers unmatched compatibility across a broad range of red dot footprints without the need for traditional adapter plates. With a 4.5-inch barrel, fully ambidextrous controls, and four total magazines included, the Echelon 4.5F Gear Up package is built for shooters who demand readiness straight out of the case. The Echelon 4.5F combines cutting-edge adaptability with duty-grade durability, featuring Springfield's patent-pending Variable Interface System that allows direct mounting of multiple optic footprints without adapter plates for a lower, stronger setup. A factory-installed Viridian RFX11 green dot with Instant-OnA(R) activation ensures fast target acquisition and long battery life, while the serialized stainless steel chassis provides strength and modular flexibility for future configuration changes. Fully ambidextrous controls support seamless operation for any shooter, and co-witness U-Dot iron sights offer reliable backup aiming. The Gear Up(TM) package enhances value with four total magazines and a durable zippered nylon case designed to keep your firearm and gear organized and ready. Specifications: Caliber: 9mm Barrel Length: 4.5" Action: Striker-Fired Optic: Viridian RFX11 Green Dot (Factory Installed) Capacity: 1-20rd and 3-17rd Magazines Sights: U-Dot system Controls: Fully Ambidextrous Mounting System: Variable Interface System (Direct Optic Mounting) Package: Gear Up(TM) Heavy-Duty Nylon Case