48 CFR § 306.302-1
Only one responsible source and no other supplies or services will satisfy agency requirements. See FAR 6.302-1
November 17, 2020
For acquisitions covered by 42 U.S.C. 247d-6a(b)(2)(A), “available from only one responsible source” shall be deemed to mean “available from only one responsible source or only from a limited number of responsible sources”.