For Federal Firearms Licensees Type 01/07/08/09 + gun store owners + gunsmiths: 27 CFR §478.41 Form 7 FFL application, §478.124 Form 4473 + NICS, §478.125 A&D book, ATF 2024 engaged-in-business final rule 89 Fed. Reg. 28968, 27 CFR §479 NFA Form 1/4 ($200 tax), 18 USC §922(g) prohibited persons, 22 CFR §120 ITAR export.
Try a different sector, a skill name, or open the command palette with Cmd+K.