The ADU-299/E missile launcher adapter is used to adapt the LAU-7 missile launcher, providing Sidewinder missile capabilities. Mechanical attachment of the adapter to the ejector rack is provided by two suspension lugs on 30-inch centers. Mechanical attachment of the adapter to the LAU-7 launcher is provided by two swivel nuts positioned on 30-inch centers to mate with the launcher bolts. When the launcher and adapters are electrically connected and mechanically mated, an adapter harness from the wing pylon to the aft end of the adapter supplies electrical power.