NSWC Crane intends to award a sole-source, 5-year firm fixed price contract to RE:Build CR, LLC for the production of specialized Isolation Rings for the TR-343 Transducer system. The estimated maximum value over the ordering period is $2.5 million. The contract requires the delivery of 250 units of each of two ring types within three months of an order, followed by an additional 250 of each every 30 days thereafter, with all units to be delivered to NSWC Crane. This is not a request for competitive proposals, but the agency will consider capability statements from other sources. The justification for the sole-source award is to avoid unacceptable duplication of costs and schedule delays.