An adapter for converting a full size aircraft bomb rack into a rack capable of supporting reduced size bombs or stores. The full size bomb rack includes a bomb ejection mechanism capable of delivering an ejection force to a full size bomb. The adapter includes an elongated plate having a body portion defining a planar center portion and end portions. The end portions include laterally extending sway braces for reducing lateral swaying of the reduced size store or bomb. The adapter plate is mounted between the reduced size store and the full size adapter rack. The body portion of the adapter rack includes apparatus for ejecting a reduced size store from the elongated plate. A first opening is arranged adjacent to one end portion of the elongated plate for receiving fasteners carried by the reduced size store which attach the store to the full size bomb rack. These fasteners are passed through an opening in the elongated plate. An ejection mechanism at an end of the elongated plate operates to transfer the ejection force from the full size bomb rack to the store.