Watch the World's First 3D Printed Rifle Fire a Shot

By now we've had a few months to come to terms with the fact that, yes, 3D printed guns exist ; yes, they generally work; and no, they're not about to herald in an age of obsolete metal detectors and lawlessness--at least not in their current form . But the newest incarnation of the weapon is bound to re-ignite the conversation. A new YouTube video has confirmed the existence of what seems to be the first fully functioning, one-shot, 3D printed rifle.