NAVAIR PMA-265 issued this sources-sought/RFI for market research to identify contractors capable of hardware-only delivery of Avionics Block III Retrofit Kits and associated Weapon Replaceable Assemblies for F/A-18 F/G, EA-18G, and Foreign Military Sales configurations supporting the U.S. Navy and Royal Australian Air Force. Required components include the Advanced Cockpit System, Audio Management System, Digital Communication System Gen 5, sub-tier components, hardware, parts, and WRAs. The period of performance is anticipated to begin in September 2027, and the contract type is anticipated to be Firm Fixed Price. Interested parties are asked to provide capability statements, commercial published price lists, lead-time, and current stock-level information; this is market research only and does not commit the Government to award a contract.