SLAC National Accelerator Laboratory, operated by Stanford University for the DOE, is seeking a supplier for a Soft X-ray Free Electron Laser Focusing Mirror. The mirror must meet strict technical specifications, including a tangential slope error of less than 0.5 µrad RMS and surface roughness below 1 nm RMS, with a Si(100) substrate and Au coating. The required lead time for fabrication and delivery is 27 weeks, and the quote is for product only with no on-site services permitted. Performance location is SLAC in Menlo Park, CA, and the Buy American Act applies to awards over $15,000 unit price. Source selection will be based on the lowest price and best lead time.