As a technical point of fact, Americans can buy tanks, missiles, hand grenades, and most any other conventional weapon if they wish, there is no prohibition und

As a technical point of fact, Americans can buy tanks, missiles, hand grenades, and most any other conventional weapon if they wish, there is no prohibition under Federal law and an existing process for doing so. In practice, it is a hassle and weapons are extremely expensive so only a handful of wealthy collectors ever dabble in it.