The Department of State is responsible for the export and temporary import of defense articles and services governed by 22 U.S.C. 2778 of the Arms Export Control Act (AECA) and Executive Order 13637. That section of the AECA is implemented by the International Traffic in Arms Regulations (ITAR," 22 CFR parts 120-130). The ITAR is available from the Government Printing Office (GPO) as an annual hardcopy or e-document publication as part of the Code of Federal Regulations (CFR) and as an updated e-document.
The Electronic Code of Federal Regulations (e-CFR) is a regularly updated, unofficial editorial compilation of CFR material and amendments published in the Federal Register.
The updated, but unofficial, version of the ITAR provided by e-CFR is linked below.
ITAR Part 120 - Purpose and Definitions
ITAR Part 121 - The United States Munitions List
ITAR Part 122 - Registration of Manufacturers and Exporters
ITAR Part 123 - Licenses for the Export and Temporary Import of Defense Articles
ITAR Part 124 - Agreements, Off-Shore Procurement, and Other Defense Services
ITAR Part 125 - Licenses for the Export of Technical Data and Classified Defense Articles
ITAR Part 126 - General Policies and Provisions
ITAR Part 127 - Violations and Penalties
ITAR Part 128 - Administrative Procedures
ITAR Part 129 - Registration and Licensing of Brokers
ITAR Part 130 - Political Contributions, Fees and Commissions
