The Defense Logistics Agency is seeking sources capable of manufacturing NSN 5331-15-027-4544, which has an AMC/AMSC rating of 3/D, and interested manufacturers are asked to complete the attached market survey and provide sourcing information to the listed Contract Specialist. Approved sources are currently identified, but companies may seek qualification as an Approved Source through DLA Land and Maritime’s Alternate Offer/Source Approval Request (SAR) program. A SAR package must include technical data demonstrating that the prospective contractor can manufacture the item to at least the same quality as the Original Equipment Manufacturer. The procurement is associated with DLA Weapons Support Columbus, and detailed SAR format and approval-process information are available on the referenced DLA web page.