I'm not Modeler, but if you (or someone else) could divide it into a few pieces and throw some support struts in there it then export it as a .PDO, this would be one awesome build. If someone can get it into .PDO form I'll try to unfold it, if you need it.
Even if they use autocad you should be able to convert the model into a file that is supported by the cnc machine from whatever file type he made it out of
great work indeed. 6 hours, amazing!! i do know that if you are interested the new supressed smg, flyingsquirrel had a wip that he made up. pretty high detail, but he said there is still some more to do. you can see it here.