An American company called Defense Distributed announced on Facebook that its founder, Cody Wilson, now has a federal license to be a gun manufacturer and dealers, proving it by publishing a photo of a Type 7 federal firearms license. This allows the company to manufacture and sell guns made through 3D-printing.
The big thing it allows me to do is that it makes me manufacture under the law—everything that manufacturers are allowed to do. I can sell some of the pieces that we've been making. I can do firearms transactions and transport.
The company has been making 3D-printed prototypes for months and demonstrated an A5-15 semi-automatic (video below), which is allowed under America law without a license.
Wilson added that he will not begin manufacturing and selling firearms until he receieves an "add-on" to his FFL, know as Class 2 Special Occupational Taxpayer which would would allow him to manufacture and deal a broader range of firearms under the National Firearms Act and give Wilson the ability to manufacture a fully-automatic rifle. He is expected to receive approval within a few weeks.