Police found a 3D-printed gun on suspect Luigi Mangione, the latest in a troubling trend of growing use of the homemade ...

It looks innocuous enough, a little like a LEGO ... illegal weapons of war and petty criminals into brutal killers. We cannot have our streets turned into war zones." A standard 3D printer can ...

The weapons, just a novelty a decade ago, have become an untraceable menace in the crime world. Arrests related to 3D-printed guns have ... a little like a LEGO or a k’nex block.