The Colorado House recently passed a significant gun control bill requiring potential buyers of certain semiautomatic firearms to undergo background checks and complete a training course. This legislation, known as Senate Bill 3, passed shortly after the fourth anniversary of the Boulder King Soopers mass shooting and has garnered attention for specifically targeting the firearms used in several high-profile mass shootings throughout the state.
Sponsored by Democratic lawmakers, this measure represents a pivotal shift in Colorado’s firearm regulation landscape, marking the strongest gun control efforts in over a decade. If signed into law by Governor Jared Polis, the bill will take effect on August 1, 2026, and aims to address the “unique lethality” of guns involved in mass shootings. Notably, the measure has sparked heated debate among legislators, with opponents questioning its effectiveness and constitutionality, while supporters emphasize the necessity of such regulations to enhance public safety.
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