The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support MECH, is seeking to procure the CLK Coding MDL Assembly and other replacement parts under a presolicitation notice. The procurement involves a specific National Stock Number (NSN 0O-5963-LLH7E4187) with a quantity of 2 units, which must be sourced from designated suppliers as per established source control guidelines, due to the lack of available technical data for alternative sourcing. This acquisition is critical for maintaining operational readiness and ensuring the reliability of electronic modules used in defense systems. Interested parties are encouraged to contact Aryel Ryan at (717) 605-4614 or via email at ARYEL.A.RYAN.CIV@US.NAVY.MIL for further details, noting that this opportunity is set aside for small businesses and will not be open for competitive proposals.