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

The switches can also be made with 3D printers. Glock Inc. does not manufacture, market or sell switches for its firearms.

The group noted the switches are illegal and are not made by Glock. Many such switches are made in China, available online, or can be created using a 3D printer, according to the lawsuits ...