At long last, someone other than Defense Distributed has taken the group's 3D-printable design and turned it into a working firearm and fired it. But, and I cannot emphasize this enough, this gun is ...

As police departments around the country report a surge in 3D-printed firearms turning up at crime scenes, gun safety ...

For decades, America's detectives have made breakthroughs in crime using gun traces. A homicide investigator typically uses ballistics and serial numbers of weapons checked via a vast network of gun ...