• Part 500 - PART 500 [RESERVED]

• Part 501 [501.101 - 501.106] - PART 501—GENERAL SERVICES ADMINISTRATION ACQUISITION REGULATION SYSTEM

• Part 502 [502.101 - 502.101] - PART 502—DEFINITIONS OF WORDS AND TERMS

• Part 503 [503.104 - 503.1004] - PART 503—IMPROPER BUSINESS PRACTICES AND PERSONAL CONFLICTS OF INTEREST

• Part 504 [504.402 - 504.1303] - PART 504—ADMINISTRATIVE MATTERS

• Part 505 - PART 505 [RESERVED]

• Part 509 [509.105 - 509.407-3] - PART 509—CONTRACTOR QUALIFICATIONS

• Part 511 [511.171 - 511.603] - PART 511—DESCRIBING AGENCY NEEDS

• Part 512 [512.216 - 512.301] - PART 512—ACQUISITION OF COMMERCIAL PRODUCTS AND COMMERCIAL SERVICES

• Part 513 [513.202 - 513.302-5] - PART 513—SIMPLIFIED ACQUISITION PROCEDURES

• Part 514 [514.201 - 514.407-4] - PART 514—SEALED BIDDING

• Part 515 [515.204 - 515.408] - PART 515—CONTRACTING BY NEGOTIATION

• Part 516 [516.203-4 - 516.506] - PART 516—TYPES OF CONTRACTS

• Part 517 [517.109 - 517.208] - PART 517—SPECIAL CONTRACTING METHODS

• Part 519 [519.507 - 519.870-2] - PART 519—SMALL BUSINESS PROGRAMS

• Part 522 [522.101 - 522.807] - PART 522—APPLICATION OF LABOR LAWS TO GOVERNMENT ACQUISITIONS

• Part 523 [523.303 - 523.370] - PART 523—ENVIRONMENT, ENERGY AND WATER EFFICIENCY, RENEWABLE ENERGY TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE

• Part 525 - PART 525—FOREIGN ACQUISITION

• Part 527 [527.409 - 527.409] - PART 527—PATENTS, DATA, AND COPYRIGHTS

• Part 528 [528.202 - 528.311-1] - PART 528—BONDS AND INSURANCE

• Part 529 [529.470 - 529.470] - PART 529—TAXES

• Part 532 [532.111 - 532.7003] - PART 532—CONTRACT FINANCING

• Part 533 [533.103 - 533.211] - PART 533—PROTESTS, DISPUTES, AND APPEALS

• Part 536 [536.101 - 536.7107] - PART 536—CONSTRUCTION AND ARCHITECT-ENGINEER CONTRACTS

• Part 537 [537.110 - 537.270] - PART 537—SERVICE CONTRACTING

• Part 538 [538.000 - 538.7204] - PART 538—FEDERAL SUPPLY SCHEDULE CONTRACTING

• Part 539 - PART 539 [RESERVED]

• Part 541 [541.501 - 541.501] - PART 541—ACQUISITION OF UTILITY SERVICES

• Part 542 [542.1107 - 542.1107] - PART 542—CONTRACT ADMINISTRATION AND AUDIT SERVICES

• Part 543 [543.205 - 543.205] - PART 543—CONTRACT MODIFICATIONS

• Part 546 [546.302 - 546.710] - PART 546—QUALITY ASSURANCE

• Part 547 - PART 547 [RESERVED]

• Part 552 [552.000 - 552.270-34] - PART 552—SOLICITATION PROVISIONS AND CONTRACT CLAUSES

• Part 553 - PART 553 [RESERVED]

• Part 570 [570.101 - 570.802] - PART 570—ACQUIRING LEASEHOLD INTERESTS IN REAL PROPERTY

• Part 571-599 - PARTS 571-599 [RESERVED]