The Department of Defense, through the NAVSUP Weapon Systems Support office, is seeking to procure 13 units of the PREAMP, MAS, under a sole source contract with Undersea Sensor Systems Inc. This procurement is specifically for the repair and modification of the item identified by NSN 7R-1680-015855400-P8, with no available drawings or data for alternative sourcing, as the OEM is the only known source for this part. Interested parties have 45 days to submit capability statements or proposals for consideration, with the anticipated award date set for March 2025. For further inquiries, interested organizations may contact Grace Y. McGinley at grace.v.mcginley.civ@us.navy.mil.