This combined RFI/synopsis is for market research on a Plug-In Unit, Electr (NSN 6625-01-675-0492WF, P/N 2218520-001), estimated quantity 4 EA, with destination SW3210 and an estimated delivery schedule of 31 October 2028. It is not an RFP or invitation for bid and does not commit the Government to contract or pay for information. The requirement is not expected to be set aside for small businesses, and the Government cites authority for supplies available from only one or a limited number of responsible sources. BAE Systems (Cage 12436) is identified as a suggested contact for small business or other subcontracting opportunities. The Government does not plan to use Part 12 commercial-item acquisition policies; interested parties may contact April Blakeley at 385-591-8032 or april.blakeley@us.af.mil.