This is a sources sought notice for market research to identify potential suppliers for the production and delivery of PATRIOT PAC-3 MSE Missiles, Launcher Modification Kits, and associated support hardware for U.S. and Foreign Military Sales customers. The government intends to negotiate with a single source and states the requirement is not currently fully funded, with awards pending receipt of sufficient funds. Responses are purely voluntary and must be received via email by 4 PM Central Daylight Time on 02 February 2026. The notice explicitly states this is not a solicitation and advises interested organizations to submit specific company and capability information. No location for performance is specified.