Glock switches — tiny devices that turn pistols into machine guns — are on the rise in Ohio and across the country. Some are used by backyard gun enthusiasts. Others are used by criminals.

A Glock switch is one type of a machine gun conversion device. It’s a metal or plastic piece, about the size of a coin, that attaches to the back of Glock pistol, a brand that is popular with ...

But both are among the growing number of states bridging the partisan divide to ban “Glock switches,” a cheap, tiny device that gives a pistol the fully automatic capabilities of a machine gun.

Gov. Kay Ivey Wednesday signed a bill making possession of a “Glock switch,” which converts semi-automatic handguns into fully automatic weapons, a state crime. SB 116, sponsored by Sen. Will Barfoot, ...

New Jersey and Minnesota sued Glock on Thursday, calling on the gunmaker to stop selling firearms that can be adapted with dime-sized switches to fire up to 1,200 rounds a minute.

Lawmakers in both states — one led by Democrats, the other by Republicans — responded this year with new laws making so-called Glock switches illegal. At least half of U.S. states now have ...