Soto Melendez used a 3D printer to make Glock switches at his Park Hills home and another man sold the devices, prosecutors said.

Police said they found Bauer with a 3D printed Glock-style firearm ... or "auto sears" allows a semiautomatic Glock-style pistol to be converted into a fully-automatic machine gun, according ...

Commentary: Until manufacturers take reasonable steps to prevent their guns from being illegally converted, the guns shouldn't be sold in New York.