rvogster, I like your style and knowledge. Be sure to stock up on AK and AR receivers before the next election. The receivers for each are considered the firearm and are relatively cheap to purchase <$100.

This would grandfather in any firearm you build with those receivers.

I don't know if you have gone through the trouble of purchasing a NFA firearm, but you may like the "Super-Shorty."

http://www.serbu.com/top/superShorty.php

This firearm is classified as an AOW (Any Other Weapon.) This classification still requires all the paperwork, but only a $5 stamp. There are other weapons like this available, so please don't claim me to be brand dependant. This is the item that I am most familiar with.

I am sorry if the link is not allowed, if so, please remove.