NSWC Crane requires a firm-fixed-price commercial purchase of optical lens assemblies, including five each of four different focal length models, with associated shipping costs. The procurement is a sole source action with Optikos Corporation of Wakefield, Massachusetts, as the approved OEM for these critical spare components used in the Target Acquisition Sensor system. Capability statements from other responsible sources may be considered, but the government retains discretion not to compete. Interested contractors must be registered in SAM. No budget or delivery timeline was specified.