This is a repair solicitation for the HEAD SECTION RCU, requiring the contractor to perform all repair work to meet operational and functional requirements. The resultant award will be issued bilaterally, and Government Source Inspection (GSI) is required. All freight is FOB Origin, and the contractor must have a Government Security Clearance. The item must be marked in accordance with MIL-STD-130 and be free of metallic mercury and mercury contamination. The performance location is at the contractor's facility, as assets are returned there for repair.