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Legislation will save lives by prohibiting the purchase and sale of all rapid fire conversion devices, commonly known as “bump stocks”, and by creating a permit to purchase dangerous, semi-automatic military style firearms that can accept high capacity magazines
DENVER, CO - The House today passed legislation sponsored by Speaker Pro Tempore Andy Boesenecker and Representative Meg Froelich that would fully implement and enforce Colorado’s existing high-capacity magazine prohibition to save lives.
“As gun violence continues to devastate communities across Colorado, Colorado Democrats are again taking action to prevent future tragedies,” said Speaker Pro Tempore Andy Boesenecker, D-Fort Collins. “When semi-automatic weapons and high-capacity magazines get into the wrong hands, it presents a major threat to the health and safety of our communities. With this legislation passing today, we’re taking another step to prevent senseless violence in our communities and save countless lives.”
“This gun violence prevention legislation answers the call to action from our neighbors and will save lives,” said Rep. Meg Froelich, D-Englewood. “We know that semi-automatic weapons become especially deadly when they are paired with high-capacity magazines, which is why Colorado Democrats passed a 2013 law to prohibit these high-capacity magazines. We’ve raised a generation on lock down drills and 1 in 15 people have experienced a mass shooting. We’re passing this bill today so we can save lives and prevent more Coloradans from having to go through the pain of losing a loved one to senseless gun violence.”
Beginning August 1, 2026, SB25-003 would fully implement and enforce Colorado’s existing law by requiring a permit and firearm safety training to purchase high-p-owered firearms that accept detachable magazines. The bill would also prohibit the purchase and sale of after-market accessories that increase the rate of fire of a semi-automatic firearm, like binary triggers.
The bill would allow a person to purchase a semiautomatic firearm with a detachable magazine after undergoing a background check and completing a firearm certification course that includes information on safe gun usage, federal and state firearm laws, de-escalation and crisis intervention strategies, range time, and more.
The bill would not impact the sale of shotguns, commonly used hunting rifles, semiautomatic firearms that have fixed magazines and almost all handguns. While SB25-003 would prohibit the sale of gas-operated semiautomatic handguns, the sale of recoil-operated handguns, which make up over 90 percent of the pistol market, would not be impacted by the bill. The bill also would not impact the possession of currently-owned firearms.
In response to the 2013 Aurora theater shooting, Colorado Democrats passed legislation that prohibited the sale and transfer of magazines that hold more than 15 rounds of ammunition. Semi-automatic weapons and high-capacity magazines have been used in numerous mass shootings in Colorado, including the 2021 Boulder King Soopers shooting, the 2022 Club Q shooting, and the Columbine High School massacre.