To buy a machine gun under the 1934 NFA, an individual needs to submit the following (the procedure remains unchanged even today): Pay a tax of $200, which in 1934 was worth over $3,500 Fill out a lengthy application to register your gun with the federal government Submit photographs Submit passport photos Get your chief law enforcement official to sign your application Wait for the results of your background check to come back - See more at:
Machine Guns Are Legal: A Practical Guide to Full Auto - The Firearm Blog