At least half of US states now outlaw devices that convert pistols into machine guns
Gun Owners of America, another gun-rights group, contends people should have a Second Amendment right to own machine guns.
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Md., Baltimore sue Glock over device enabling machine-gun fire
Firearms and Explosives. But some who make them illegally place Glock’s logo on the back. The devices cost about $20 and can also be made with a 3D printer. Baltimore Mayor Brandon Scott (D ...