The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a Tube Assembly, identified by NSN 1R-9999-LLCGDR535-V2 and reference number 901-025-623-157, with a quantity of one unit required for delivery FOB origin. This procurement necessitates engineering source approval to ensure the quality of the part, which must be acquired from approved sources possessing unique design capabilities and manufacturing knowledge essential for maintaining the part's integrity. Interested parties are encouraged to submit their interest and capability statements within 45 days of this notice, as the government intends to negotiate with only one source under FAR 6.302-1. 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.