48 CFR 5145.303 - Providing material.
(S-90) Existing Government material on hand or being used prior to conversion to contractor performance of commercial activities may be offered to contractors if it is determined to be in the best interest of the Government per FAR 45.303-1. If the material is to be provided without replacement by the Government, the solicitation must state that it will not be replaced. If it is determined that the Government will be responsible for replacement of any of the material, those items must be listed on a separate Technical Exhibit and the solicitation state that replacement will be by the Government. These items will be governed by the appropriate Government Property clause in the contract in accordance with FAR 52.245-2 for fixed-price and FAR 52.245-5 for cost-reimbursement type contracts.