The catch is since 1986 new imports or production for "civilians" has been banned by the US government so the number of pieces in the market is fixed - and they are terribly expensive. Someday perhaps, our constitutional right to bear arms will be returned to it's intended meaning, applying to personal defense and military type weapons alike. We are presently making gains in that regard. The federal courts will soon (we expect) fully codify the right to personal defense weapons, then well start working on the rest.

