The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support MECH, is seeking to procure 25 units of audio frequency amplifiers and other replacement parts under the presolicitation notice. The procurement involves a specific National Stock Number (NSN 7H-5996-014314290) and is characterized by the government's determination that it is uneconomical to acquire the data or rights necessary for competitive sourcing, thus limiting the solicitation to a single source. This equipment is critical for military operations, and interested parties are encouraged to submit their capabilities and interest to the contracting officer, Sarah Ream, at SARAH.E.REAM.CIV@US.NAVY.MIL, within 45 days of the notice publication. The government will consider all proposals received within this timeframe, although it retains discretion over whether to pursue competitive procurement.