NASA/NSSC intends to issue a sole source contract to FOTOFAB, LLC for an SS316 Subscale Recuperator Core, as they are determined to be the sole provider. Performance of the services will be located at NASA’s Marshall Space Flight Center (MSFC). Interested organizations may submit their capabilities and qualifications in writing by 3:00 p.m. Central Standard Time on 6/25/2026 for consideration of a competitive procurement. No specific budget amount is mentioned in the description. This is a commercial item acquisition under FAR Part 12, and the government retains discretion to proceed non-competitively.