Jose Rivera, 24, of Worcester, faces one count of unlawful possession of a machine gun, the US Attorney for Massachusetts said. He will be held pending a hearing on Friday.
Police said they found three Glock switches at his house, which convert pistols into full-auto. One of them was attached to a Glock. 40 caliber in Rivera's bedroom, authorities said. The ATF considers a firearm with this modification a machine gun.
Rivera faces up to 10 years in prison if convicted of unlawful possession of a machine and up to $250,000 in fines, the prosecutor said.
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