There's definately a catch to everything haha. Seems unless the ban is lifted (yea right) they will just get harder to find and more expensive. Its a shame, I was born in 83 and I'm willing to bet back then a full auto was pretty reasonably priced.
Definately not in my budget right now so the shorty suppressed ar will have to keep me happy for a while haha. Thanks for all the info though.