I don't think there is anywhere that you can own one in the US without several hoops. You also can't buy a new one, so the very few that are available command an hefty price.
(, Thu 7 Jul 2022, 2:20, Reply)
Every Machine Gun is full-auto, but not every gun capable of full-auto is a Machine Gun.
If it has a limited burst or single-shot firing switch, it's (almost certainly) not a Machine Gun. I believe the AK-47 has a semi-auto firing mode, which would put it firmly into Automatic Rifle territory.
I'm being a total Pedant, though. Because, as you rightly state, it's rather difficult and costly to legally obtain and operate a fully automatic weapon. The US Government are quite rightly concerned about how potentially dangerous these weapons could be in the wrong hands, compared to - oh, I dunno - a weapon where you need to pull the trigger every time you want to inflict grievous damage on another human being.
(, Thu 7 Jul 2022, 17:20, Reply)
According to Wikipedia, Title 2 defines a machine gun as, "Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger."
(, Thu 7 Jul 2022, 19:51, Reply)