Image from Defense Distributed The DEFCAD community has released an upgraded version of the Defense Distributed Liberator 3D printed pistol. As they are individuals on the Internet and not an organization, they have never received a letter from any government entity asking them not to distribute computer files.Improvements include barrels for the .25 ACP cartridge and for the .45 ACP cartridge. No information was supplied to determine if any test firing of these cartridges has been done. I suspect that the .25 ACP version would work, but I have doubts about the .45 ACP barrel. While the working pressures are...