The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking a sole source procurement for the assembly of lower link components, specifically NSN 7R-1615-011594710-VH, with a quantity of four units required. This acquisition is critical as the government lacks sufficient data to contract with any source other than the current supplier, highlighting the specialized nature of the helicopter rotor blades and drive mechanisms involved. Interested vendors must be aware that government source approval is necessary prior to award, and they are encouraged to review the NAVSUP WSS Source Approval Brochure available online. For inquiries, potential bidders can contact Casey M. Brown at (215) 697-3752 or via email at CASEY.M.BROWN20.CIV@US.NAVY.MIL.