Gun rights groups sue Colorado over the state's ban on 'ghost guns,' which lack serial numbers

FILE - This image provided by U.S. Attorney's Office for the Eastern District of New York, shows a ghost gun seized in undercover transactions in New York. On Monday, Jan. 1, 2023, gun rights groups filed a federal lawsuit challenging Colorado's ban on so-called ghost guns. (U.S. Attorney's Office for the Eastern District of New York via AP, File)

DENVER (AP) — Gun rights groups have filed a federal lawsuit challenging Colorado's ban on so-called ghost guns — firearms without serial numbers assembled at home or 3D printed that are difficult for law enforcement to trace and allow people to evade background checks.

The litigation filed Monday is the latest of several Second Amendment lawsuits aimed at a passed by Colorado's majority Democratic legislature and signed by Democratic Gov. Jared Polis last year.

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