This is a proposed sole-source contract for 18 units of a specific part, with Vacco Industries as the approved source. The Government intends to negotiate with only one source but will consider capability statements from other responsible sources received within 45 days. It has been determined uneconomical to obtain the data rights to compete or reverse-engineer the part. Interested parties can obtain related standardized documents online via ASSIST-Quick Search or through the DODSSP in Philadelphia, PA. Those proposing a commercial item alternative must identify their capability within 15 days of this notice.