This is a restricted solicitation for commercial items, with the government anticipating a firm-fixed-price purchase order awarded on a sole source basis to Leach International Corporation. The requirement is for 33 each of a specific Relay (NSN 5945-01-HS3-7350, P/N KX-X5N), with an option for up to 30 additional units at the same price exercisable within one year after award. Offerors must be authorized Leach distributors with clear OEM traceability and must furnish a Certificate of Conformance. Only quotations with F.O.B. Destination or F.O.B. Origin shipping terms will be accepted; Ex Works and other Incoterms 2020 terms are not allowed. The applicable NAICS code is 336413 with a small business size standard of 1250 employees.