The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure 63 units of a concentrator oxygen system, identified by NSN 7R-1660-016781742-V2 and reference number 3261129-0104. This procurement is classified as a sole source requirement, with Mission Systems Davenport Inc. being the anticipated sole provider due to the critical nature of the item and the lack of available technical data for alternative sources. Interested parties must contact Kristin Clemens at (215) 697-3814 or via email at KRISTIN.CLEMENS@NAVY.MIL to express interest or inquire about the source approval process, as proposals must be submitted within 45 days of this notice to be considered for award.