An expandable modular rack for storing at least one magazine and at least one handgun is disclosed. The expandable modular rack includes: a first member; a second member having a base and at least one protrusion extending from a medial portion of the base; and a means for joining a surface of the first member to a surface of the second member, wherein the first member is arranged to maintain the magazine in an upright position, and wherein the base of the second member is arranged to support a base of the magazine and the protrusion of the second member is arrangeable to maintain the magazine in the upright position. The rack can further include: a third member; and a means for joining the first member to the third member, wherein the third member and first member are arranged to support the handgun.