Question: what is an atf form 1?
Answer: ATF's “Form 1” is actually ATF Form 5320.1. ... ATF Form 1 is an “Application to Make and Register a Firearm.” It is used whenever a non-FFL wants to make an “NFA Firearm” such as a silencer (suppressor), short barreled rifle (SBR), short barreled shotgun (SBS), or an Any Other Weapon (AOW).