FILE - Boulder County Courthouse

Boulder County Commissioners’ Office in the Boulder County Courthouse

(The Center Square) – Gun rights groups are suing the cities of Boulder and Louisville over ordinances prohibiting the sale of assault weapons and "large capacity" magazines.

Colorado-based Rocky Mountain Gun Owners (RMGO), a gun rights advocacy group, and the National Foundation for Gun Rights (NFGR), a nonprofit legal organization, filed the lawsuits Thursday, arguing that newly-enacted prohibitions in the cities are unconstitutional. 

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