Abstract: A mobile armory is described that is based on a modified EDSS shipping container. The EDSS includes a plurality of weapons enclosures slidable between fully inserted positions inside the EDSS and fully extended positions extending from the container. The enclosures are supported on telescoping rails that are attached at the top of the container, either to a frame secured inside the container, or to mounting beams welded to the lower surface of the container top wall. Each enclosure has top, bottom, rear, and end walls that define a compartment with a front opening. Panels are slidable between fully closed positions to cover the opening, and fully open positions for access to the compartment. Weapons racks are mounted at selected positions in the enclosure to store rifles, pistols and other weapons. During transport, the enclosure panels are locked and the EDSS doors are locked, providing double security.