Bill to make plastic guns detactable dies on Senate floor.
And Congress can't agree on what to do.
"The .380 bullets fired from the Liberator penetrate sufficiently to reach vital organs and perforate the skull."
The Internet has its own version outlaws, and it's unclear if they're idealistic heroes or mere criminals.
The nonprofit behind the first 3-D-printed gun is preparing for a legal battle that will determine the future of open-source weapons.
The technology could enable weapons to slip through metal detectors undetected, a leaked memo warns.