This opportunity is for the acquisition of 4 units of NSN 7R-1680-015289926-CB, with delivery FOB origin. The government intends to solicit and negotiate with only one source, but all responsible parties may submit capability statements or proposals. The item is flight critical and requires government source approval prior to award, meaning only previously approved sources have been solicited. New sources must submit detailed technical data per the NAVSUP WSS Source Approval Brochure, and failure to provide all required data will disqualify an offer. No budget amount or performance location is specified in the description.