My idea was to just use an s12 with modified [registered] reciever ,cut the barrel and not install a buttstock of any kind. I know it can be done ,but im not sure im dedicated enough to do it[ or financially able]!!! Anythings possible with a sawzall and a welder, right? What hoops do u have to jump through to register a reciever as aow?? paperwork? sign off? $200? am i missing any thing? I really appreciate all of ur opinions.