Seems to me, The State has decided that anyone that builds their own Gun is a criminal and has intent on committing crimes with guns they made, therefor no one should have or make a gun of their own: Applies prior restraint against Citizens irrespective their station in life and society...perhaps I'm an inventor, a Gunsmith, a DIY'er, or maybe just a prohibited person without respect of fear of the Law...I just don't know, but that part of "...Shall not be infringed." is pretty unambiguous.