The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the assembly of slat boxes as part of a repair and modification effort. The procurement involves the supply of five units of NSN 7R-1680-016904343-P8, with delivery terms set to FOB Origin, emphasizing the critical nature of the item which requires engineering source approval to ensure quality and compliance with military standards. Interested vendors must be approved sources or provide necessary documentation for source approval, as the item is flight critical and the government intends to negotiate with only one source under FAR 6.302-1. Proposals must be submitted within 45 days of this notice, and inquiries can be directed to Brian T. Kent at (215) 697-0000 or via email at BRIAN.T.KENT.CIV@US.NAVY.MIL.