An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for releasably coupling the outer tubular member to the inner tubular member, including a tubular coupling body movably coupled to the inner tubular member, a coupling arm extending from the tubular coupling body, and a coupling element extending from the coupling arm, the coupling element adapted to mate with at least one outer tubular member slot and at least one inner tubular member slot.