The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure a Tube Assembly (NSN 1R-9999-LLCGDR535-V2, REF NR 901-025-623-157) with a quantity of one unit, to be delivered FOB Origin. This procurement requires engineering source approval to ensure the quality of the part, necessitating that the acquisition or repair be conducted by approved sources with unique design capabilities and manufacturing knowledge. The contract action will be negotiated with only one source under FAR 6.302-1, and interested parties are encouraged to express their interest and capability within 45 days of this notice. For further inquiries, interested vendors can contact Natalie A. Kilkenny at (215) 697-3951 or via email at NATALIE.A.KILKENNY.CIV@US.NAVY.MIL.