The 50 caliber pistol is the highest pistol which can be purchased without the need for a permit. Some pistol shotguns exist which can be 75 caliber weapons.
In MOST of the US, a permit is NOT required to purchase a .22 rifle. IF one is required in your area, it is because elected politicians passed a law that says you need a permit. You would need to ask them why they did that.
No. Minnesota requires a transfer permit for handguns.
Sort of. If you're in a state which will allow you to obtain a Class III permit to own a full auto firearm, you can buy a full auto pre-1986 AR-15 lower receiver, then purchase the upper receiver and other components.
No. You must be 18 to purchase a rifle of shotgun. yes at 16 in Indiana you can buy a shot gun or rifle from a gun store without a permit I live in Indiana so I should know.
An automatic rifle is a rifle which loads itself from a belt or magazine.
Without requiring a permit for a short-barreled rifle (SBR), 16 inches. That's federal law.
There are licenses and licenses. You can get a firearms owner's ID that will permit you to purchase and possess a rifle, shotgun or bb/ pellet gun at 18. A handgun permit is 21. A permit to CARRY a concealed handgun is 21.
Pretty much, all of them. Minnesota has no so-called "assault weapon" ban (at least, not that I'm aware of), and, even if the state did, the only variants which could possibly qualify under such a law are the detachable magazine SKS-M and SKS-D rifles. If the state of Minnesota doesn't require you to obtain a permit to purchase a long gun (and, if they do, then it's news to me - permits for handgun purchases aren't uncommon, but I've never heard of a permit for a long gun purchase), then you should be able to purchase any type of SKS rifle without having to obtain a permit first.
No.
You can buy a semi automatic Title I rifle at 18. To purchase a true, select fire (auto or burst) NFA tax stamped assault rifle, you must be 21.
a semi automatic, in most states yes. in some you have to be 21 to purchase a rifle.