The novel I'm currently shopping, Phase Line Escher, deals with life in an age in which bio and nano-tech weapons of mass destruction can be fabricated in a garage using advanced 3D printers or desktop gene sequences. The Boing Boing article below, about a man who recently printed some of the major components of a functional AR-15 assault rifle at home, could well serve as a milestone for how we're closing in on that age here in the real world. Interesting and frightening at the same time.
Report of working 3D printed gun - Boing Boing:
'via Blog this'