It seems like the ATF is a bit angry at the 3D handgun printing project. They are giving the folks a hard time about it, and claiming that manufacturing a pistol without a manufacturers license is against the law, even if you have no intention of selling it. That is not in keeping with longstanding regulations.
In related news, the manufacturer of the printer has revoked the printer lease. I wonder if the ATF had anything to do with that.
The comments on the article are pretty stupid: this is all necessary to prevent terrorists from printing guns. As if you can’t already buy full auto AK47s made by hand in a cave in Afghanistan for $15.