The Springfield Armory Echelon 4.5F OD Green introduces next-generation combat ergonomics and high-capacity performance wrapped in a tactical silhouette. Chambered in 9mm Luger, this full-sized handgun features a 4.5-inch cold hammer-forged steel barrel and a slide beautifully finished in a durable Olive Drab Green Cerakote. Engineered around the innovative, modular, and serialized Central Operating Group (COG) chassis system, the internal fire control unit can easily drop into entirely different grip sizes. Its revolutionary plate-free Variable Interface System (VIS) allows over 30 leading micro optics to mount directly and deeply into the slide configuration without heavy adapter plates. Outfitted with fully ambidextrous operational controls and premium tritium U-Dot night sights, this high-capacity model ships with one 17-round flush magazine and one 20-round extended magazine.