Is it legal to buy automatic weapons and assault rifles in the US?

Answer 1

Yes, but don't expect to go to your local gun shop or gun show and buy one.

They are very expensive and are in limited supply. You need to be 21 years old if you wish to purchase a true assault rifle, which would be an NFA taxed stamped select-fire Class III firearm capable of full auto function. Buying NFA items is NOT easy. Full auto rifles are very expensive and there is a limited supply available to the public (your local gun store or gun show WILL PROBABLY NOT have any). Full auto capable "assault rifles" ARE NOT being bought at gun shops and gun shows in the US and taken to Mexico. All NFA items must be registered with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF). Private owners wishing to purchase an NFA item must obtain permission from the ATF, obtain a signature from the county sheriff or city or town chief of police (not necessarily permission), pass an extensive background check (including a NICS), submit a photograph and fingerprints, fully register the firearm, receive ATF written permission before moving the firearm across state lines, and pay a tax ($200). While an individual owner does not need a NFA dealer license to buy Title II firearms. A licensed Class III dealer would have to receive the rifle for you before it could be transferred to you.