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Thursday, October 29, 2026Oct 29

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States move to outlaw popular ‘Glock switches’ that make some guns fully automatic

A semi-automatic pistol with a conversion device installed making it fully automatic is fired as four empty shell casings fly out of the weapon, at the Bureau of Alcohol, Tobacco, Firearms and Explosives National Services Center in 2023 in Martinsburg, W.Va. Glock has become the target of mounting lawsuits from cities and states accusing it of failing to prevent illegal modifications of its firearms. (AP Photo/Alex Brandon, File)
A semi-automatic pistol with a conversion device installed making it fully automatic is fired as four empty shell casings fly out of the weapon, at the Bureau of Alcohol, Tobacco, Firearms and Explosives National Services Center in 2023 in Martinsburg, W.Va. Glock has become the target of mounting lawsuits from cities and states accusing it of failing to prevent illegal modifications of its firearms. (AP Photo/Alex Brandon, File) A semi-automatic pistol with a conversion device installed making it fully automatic is fired as four empty shell casings fly out of the weapon, at the Bureau of Alcohol, Tobacco, Firearms and Explosives National Services Center in 2023 in Martinsburg, W.Va. Glock has become the target of mounting lawsuits from cities and states accusing it of failing to prevent illegal modifications of its firearms. (AP Photo/Alex Brandon, File)

More states are enacting bans on “Glock switches,” small devices about the size of a U.S. quarter that can turn semiautomatic firearms into fully automatic weapons capable of firing up to 1,200 rounds per minute.

Gun conversion devices have become a rare point of bipartisan agreement on gun policy. Although firearm regulations often face pushback in Republican-led states, growing support from local law enforcement officials has helped these bans gain traction.

Last month, Alabama Gov. Kay Ivey, a Republican, signed into law a bill that made Alabama the 26th state to outlaw gun conversion devices, also known as auto sears. A sear is the part of the gun that holds the hammer or firing pin back until the trigger is pulled.

“While there is a federal ban on these gun conversion devices, we needed a way to empower our own law enforcement here in Alabama to get these illegal and extremely dangerous Glock switches off our streets,” Ivey said in a statement after signing the bill into law.

These devices, which can be 3D printed or bought online for as little as $20, have become closely associated with Glock handguns, which are often cited as some of the easiest to modify.