Abstract: A packaging system for a single ammunition includes a cylindrical metal container and a cap therefore. A locking mechanism locks the cap to the top end of the container and a guiding mechanism guides the cap onto the top end of the container before the locking mechanism is locked to assure proper alignment. A plurality of impact rings are located laterally about the container and the cap to provide impact protection therefore. A stacking mechanism for each container allows a plurality of the containers to be securely stacked adjacent one another. The stacking mechanism includes a first top member and a second top member located adjacent the top ring and located 180° from one another about the cap such that the first top member of one cap interlocks with the second top member of an adjacent cap, and a similar arrangement on the bottom ring of the container.