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Second Amendment Advocates File Lawsuit over Colorado’s New Semi-Automatic Weapons Law

The lawsuit argues that Senate Bill 25-003 imposes unconstitutional burdens on law-abiding citizens, including veterans relying on banned accessories, before the law takes effect in August 2026.

  • On Tuesday, supporters of Second Amendment rights organized a press event to discuss Colorado’s recently enacted gun law, SB 25-003, and revealed they had initiated a lawsuit opposing it.
  • Earlier this year, Governor Jared Polis approved legislation that mandates firearms safety training every five years and prohibits the use of rapid-fire conversion devices as well as high-capacity magazines.
  • Applicants must pass an exam with at least 90% after training, and sheriff's offices must verify applicants have no disqualifying criminal convictions before approving sales.
  • Senator Tom Sullivan said, "High-capacity magazines are what put the ‘mass’ into mass shootings," while the Colorado State Shooting Association called the law "burdensome" and said it "won't stop crime."
  • The Mountain States Legal Foundation initiated a federal lawsuit representing the Colorado State Shooting Association and six individual plaintiffs, aiming to block the law from taking effect on August 1, 2026.
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KRDO broke the news in Colorado Springs, United States on Tuesday, September 2, 2025.
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