I would be more impressed with a Cnc ultra precision boring/engraving device on the cheap. Maybe someday...
Exactly. With a little bit of practice and a supply of good stock to feed the machine, you can make guns or whatever else using someone else's program to run the CNC machine, just like what's being proposed with the 3-D printers.
The difference is, you can make a durable, functional firearm with the CNC technology that's available *today*.