41 C.F.R. § 102-36.30
Maximize use of excess personal property
Using excess personal property to the maximum extent practicable maximizes the return on Government dollars spent and minimizes expenditures for new procurement. Before purchasing new property, check with GSA for available excess personal property that may be suitable for your needs. You must use excess personal property unless it would cause serious hardship, be impractical, or impair your operations.