All, I have a CPFF contract for which my company did a voluntary cost share. The cost share portion of the contract covered primarily material and some subcontract services/supplies. Should there exist residual material on this contract that falls under the cost share (everything has been properly segregated is it handled as a typical CPFF? I.E. even though the material was funded by the cost-share portion of the contract does it belong to the government? Or would the material purchased under the cost share belong to the contractor? Is there any FAR support for this type of situation?