The following tutorial will show you around the part 447 landing page.
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
Effective date is the date this part was last amended
Any person who willfully, in a registration or permit application, makes any untrue statement of a material fact or fails to state a material fact required to be stated therein or necessary to make the statements therein not misleading, shall upon conviction be fined not more than $1,000,000, or imprisoned not more than 10 years, or both.