The Naval Surface Warfare Center, Crane Division, requires TR-343 Transducer Ceramic Stack Assemblies (CSA), critical components for the AN/SQS-53C sonar system used in anti-submarine warfare. This is a non-commercial, 5-year, firm-fixed-price, indefinite-delivery indefinite-quantity contract with an estimated maximum value of $9.9 million. The contract is being solicited on a sole-source basis to SyQwest, LLC in Cranston, RI, as award to another vendor would cause unacceptable duplication of costs and delays. All responsible sources may submit a capability statement for consideration, though the government may proceed without competition. Performance of services is at the contractor's location in Cranston, Rhode Island.