This is a Sources Sought notice to identify potential manufacturers for 57 mm MK 307 MOD 0 Dummy Cartridges, including components, assembly, packaging, and testing. The planned acquisition is a Firm Fixed Price contract in Fiscal Year 2027 for an estimated quantity of 1,000 cartridges. The work involves manufacturing cartridges that meet specific technical drawings and must function in the MK 110 Gun Mount under various conditions. Interested companies must demonstrate relevant manufacturing, quality assurance, and testing capabilities. Responses are requested via email by 3:30 p.m. EST on March 3, 2026.