This requirement is for 13 units of NSN 7R-1680-016460636-V2, with delivery FOB origin. 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 the detailed information specified in the NAVSUP WSS Source Approval Information Brochures, or they will not be considered. The approved source retains essential data rights and manufacturing knowledge that are not economically available to the Government. This acquisition is not being conducted under FAR Part 12 commercial item procedures.