The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of four units of the Spindle Assembly, identified by NSN 7R-1615-012382442-VH and part number 70102-28100-045. This is a sole source requirement, as the government lacks sufficient data to contract with any source other than the current supplier, and the items are subject to Free Trade Agreements and the World Trade Organization Government Procurement Agreement. Interested vendors must obtain Government Source Approval prior to award and submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, which is available online. For inquiries, interested parties should contact Samantha M. Freedman at samantha.m.freedman.civ@us.navy.mil.