This is an unrestricted solicitation for the calibration of an ABE Model and Adapter Set, intended to be awarded as a firm-fixed-price purchase order on a sole source basis to the Original Equipment Manufacturer (OEM), Textron Systems Corporation. The required services must be performed by the OEM or an OEM-authorized facility, and no drawings, specifications, or schematics are available from the agency. The contractor must provide a Certificate of Conformance with traceability to the manufacturer. The applicable North American Industry Classification Standard Code is 488190, with a small business size standard of $40 million. Performance of services is expected to comply with the Statement of Work and the Maryland wage determination.