Abstract: A rail-type airborne missile launcher having a main launcher body for fixed attachment to an aircraft, and a sub-rail removably attachable to the underside of the launcher body to carry a missile, is further provided with individual hook modules that can be attached to the underside of the launcher body, when the sub-rail is removed, at selected locations along the launcher body to carry a variety of stores. Such hook modules can each carry a separate respective store or they can be employed as an oppositely-facing pair at a selected distance apart to both carry a single store. In the former case, the hooks will be operable separately, such as by electromagnetic means, for separate release of the stores; but in the latter case both hooks will be arranged to release simultaneously.