This opportunity is for the procurement of 3 units of a flight-critical part (NSN 7R-6130-016846868-GF) that requires Government source approval prior to award, with delivery FOB Origin. The part is sole-sourced due to unique design data and rights held by the approved source, and no drawings are available. Only previously approved sources have been solicited; new sources must submit detailed qualification data per the NAVSUP WSS Source Approval Brochure or their offer will not be considered. Proposals from non-approved sources must be submitted within 45 days (or 30 days under an existing BOA) to be considered, though the Government intends to negotiate with only one source. No budget amount or performance location is specified.