NAVSUP Weapon Systems Support Philadelphia intends to award a sole-source contract to Sikorsky for the procurement of 7 units of a Stop Assembly Unit (NSN 1R-1630-016890346-H5, P/N 06100-08515-042). The government does not own the data or rights needed to purchase this part from other sources, and no drawings are available. Any manufacturer not already approved must submit a Source Approval Request, and this procurement will not be delayed for SAR approval. The solicitation will follow FAR Part 15 procedures, is not a commercial item acquisition, and is not set aside for small businesses. Interested parties may submit capability statements for consideration, but the government intends to negotiate only with Sikorsky under an existing Basic Ordering Agreement.