You can do this in Florida too but its a freaking process. You have to get signatures from the county sheriff and other officials, and then wait and wow its a pain.
you can do this without the signatures or any law enforcement involvement. You need to do a "trust" and you can get around this and only deal with the ATF
start your reading here if you are interested in Short Barreled Rifles (SBR,) Any Other Weapons (AOW,) or supressors