Abstract: A flat, rectangular, concealed wall-mounted locking cabinet which can be securely fastened through the outside surface of a wall and into supporting studs without requiring significant modification to the wall is described. The cabinet is completely concealed by a nesting cover that simultaneously functions as a picture frame or other artistic work. The cover and the door of the cabinet both may open in a downward manner, thereby permitting the cabinet to be made in a variety of sizes whereby handguns and long guns, such as shotguns and rifles, as well as other articles, may be accommodated.