39 C.F.R. § 601.103 Applicability and coverage.
Title 39 - Postal Service
The regulations contained in this part apply to all Postal Service acquisition of property (except real property) and services. Solicitations issued and contracts entered into prior to the effective date of the regulations in this part will be governed by the regulations in effect at the time the contract was signed.
Title 39: Postal Service
PART 601—PURCHASING OF PROPERTY AND SERVICES
§ 601.103 Applicability and coverage.

