An AR-15 with a detachable magazine at Bristlecone Shooting, Training and Retail Center in Lakewood, Colorado, on Thursday, Jan. 16, 2025. The Colorado legislature is considering a bill that would ban the manufacture, purchase and sale of semiautomatic rifles and shotguns that are capable of accepting detachable ammunition magazines, as well as some semiautomatic pistols and handguns. (Jesse Paul, The Colorado Sun)
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The Colorado Bureau of Investigation processed 59,452 gun background checks last month. By comparison, the agency processed 20,172 gun background checks in July 2025.