Building firearms for your own personal use is legal in the US if you are not a prohibited person. Technically you can even sell one if you decide you don't wan

Building firearms for your own personal use is legal in the US if you are not a prohibited person. Technically you can even sell one if you decide you don't want it. Check out this AK-47 made from a shovel http://bit.ly/1jGxsFu http://bit.ly/1jGxsFu I don't get why 3D printing is receiving special attention compared to CNC machining or ye olden Bridgeport. If you want to make a Liberator it wouldn't take a hacker much time to figure out a way to do it with a minimum of tools. Think about it. It's just subtracting material from steel.