This notice seeks sources able to manufacture NSN 5965-01-598-1231, currently approved only from UME Voice (CAGE 1VNZ2) under part number 871A. The AMC/AMSC code indicates the item will be acquired directly from the actual manufacturer because technical data for competitive procurement is unavailable or uneconomical to obtain. Interested companies may submit source information to the contract specialist or apply to become an approved source through the DLA Weapons Support Alternate Offer/Source Approval Request (SAR) program. A SAR package must demonstrate the ability to manufacture the product to a quality level equal to or better than the original equipment manufacturer. The approval process and application requirements are detailed on the DLA Weapons Support website.