CFR›Title 48›Chapter 5›Part 501 ContainsSubpart 501.1CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 501—GENERAL SERVICES ADMINISTRATION ACQUISITION REGULATION SYSTEM Subparts 501.1 Subpart 501.1—Purpose, Authority, Issuance Sections 501.101–501.106 Authority40 U.S.C. 121(c).Source64 FR 37203, July 9, 1999, unless otherwise noted. Next 502 Part 502—Definitions of Words and Terms