27 CFR Part 447
Importation of Arms, Ammunition and Implements of War
27 CFR Part 478
Commerce in Firearms and Ammunition
27 CFR Part 479
Machine Guns, Destructive Devices, and Certain Other Firearms
27 CFR Part 555
Commerce in Explosives
27 CFR Part 646
Contraband Cigarettes
27 CFR Part 771
Rules of Practice in Explosive License and Permit Proceedings
ATF uses the eRegulations platform to make regulations easier to read and navigate.
Regulation data is copied from the Office of the Federal Register website and the GPO FDSYS system and should not be considered authoritative, as those sources are not official legal editions of the Code of Federal Regulations.
eRegulations clarifies regulations by bringing related information and regulatory history to the forefront. It is a work in progress and a public domain work of the United States Government.
Below are details on some eRegulations features and how to use them.
eRegulations is an open source project. Visit the project repository to learn more and contribute.
Added related documents in search results feature to view links to related documents associated with sections that include related documents
Added diff compare feature to compare diff versions
Added part switcher to the top ribbon to allow easy switching between regulation parts
Clear typography makes regulations legible and easy to scan.
Responsive design adapts the tool to fit to your screen.
Persistent table of contents for fast access to any section of the regulation.
Regulation timeline shows recent revisions of the regulation organized by effective date.
Wayfinding in the header makes it easy to know where you are in the regulation and what revision you’re viewing.
Search function to find where specified text appears in a regulation.
The regulation timeline shows recent revisions of the regulation organized by latest effective date.
To stop comparing, return to the regulation timeline tab — — at the top left side of the screen. Click the “Stop Comparing” button under the second of the two revisions being compared.
Compared regulation diffs can be viewed side-by-side to help with readability. The newer or current regulation will appear on the left with the older version on the right.
If a regulation has any related documents you can navigate directly to them from the search results
Printing a regulation is possible by selecting a print option from the landing page or sidebar. Regulations can be printed as an entire part or as an individual section.
