The Springfield Armory Echelon 4.5F Desert FDE sets a new standard for modern, striker-fired duty pistols by pairing peak combat engineering with adaptable modularity. Chambered in 9mm Luger, this full-sized handgun features a 4.5-inch cold hammer-forged steel barrel and a billet-machined slide finished in a durable Desert FDE Cerakote. Built entirely around the self-contained, serialized Central Operating Group (COG) chassis system, the fire control unit can easily drop into completely different grip sizes. Its revolutionary, patent-pending Variable Interface System (VIS) uses self-locking pins rather than heavy adapter plates to direct-mount over 30 leading micro red dots exceptionally low to the slide matrix. 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.