The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the acquisition and repair of a modification kit identified by NSN 1R-1680-016453149-F8, with a quantity of 160 units required. This procurement is restricted to government-approved sources due to the militarily sensitive technology involved, necessitating prior source approval before contract award, as the item is flight critical. Interested parties must submit detailed technical data and source approval requests as outlined in the NAVSUP WSS Source Approval Information Brochures, with proposals due within 45 days of this notice. For further inquiries, potential bidders can contact Chad M. Fichter at (215) 697-2782 or via email at CHAD.M.FICHTER.CIV@US.NAVY.MIL.