This is a sole-source procurement for NSN 7R-1680-016877963-QF, with a quantity of 12 units and delivery terms FOB origin. The item is flight critical and requires mandatory Government source approval before award; only previously approved sources have been solicited. New sources must submit a completed Source Approval Information Brochure with their proposal, and failure to provide all required data will disqualify the offer. The Government intends to negotiate with only one source under FAR 6.302-1, though all responsible parties may express interest for possible future competition. The acquisition is subject to Free Trade Agreements and applicable trade agreement clauses.