The Air Force Life Cycle Management Center is conducting market research via a Request for Information to identify industry sources capable of providing a Ground-Based, Medium-Caliber Gun Weapon System. The system must defend against subsonic cruise missiles and Unmanned Aircraft Systems groups 1-5, with capabilities assessed across fifteen baseline operational and technical parameters, including probability of kill, effective slant range, magazine depth, and cost per engagement. The government also seeks industry input on trade-space attributes such as munition performance versus cost, organic sensor capability and phenomenology, and rapid deployability. Interested parties are invited to submit capability responses at their own expense, with no proposals being accepted at this time. The anticipated NAICS code is 332994, and respondents must be registered in SAM for future eligibility.