An assembly structured for removably mounting armor on a user's body in a protective orientation including a base having an inner portion and an outer portion. The inner portion is structured to retain the armor, preferably but not exclusively, in the form of an armor plate on the base in substantially facing relation to the body of the user, wherein the outer portion is disposed in overlying, covering relation to the armor. Preferably the base is formed of a rigid material and an attachment assembly is connected to the base and structured to facilitate the operative and removable mounting of the base and the armor on the user in a predetermined protective orientation. The attachment assembly may also include a plurality of connectors and a common release mechanism, wherein the base and the armor can be quickly and easily removed from its protective orientation and operative mounting on the user.