On March 28, 2025, the Colorado State Legislature introduced House Bill 1133, aimed at regulating the sale and delivery of ammunition within the state. The bill seeks to address concerns surrounding public safety and responsible firearm ownership by establishing stricter guidelines for the sale and distribution of ammunition.

Key provisions of House Bill 1133 include a minimum purchase age of 21 years for ammunition buyers, with violations classified as civil infractions for first-time offenders and escalating to class 1 misdemeanors for subsequent offenses. The bill mandates that individuals shipping ammunition must provide written notice to the deliverer that the package contains ammunition, while also prohibiting any external labeling that indicates the package's contents. Violations of these shipping requirements are also categorized as class 1 misdemeanors.

Additionally, the bill requires retail ammunition deliverers to verify the age of the recipient upon delivery and obtain written acknowledgment of receipt. Failure to comply with these delivery requirements similarly results in a class 1 misdemeanor charge.

The introduction of House Bill 1133 has sparked notable debates among lawmakers and advocacy groups. Proponents argue that the bill is a necessary step toward enhancing public safety and preventing unauthorized access to ammunition, particularly among minors. Critics, however, express concerns about the potential for overregulation and the impact on lawful gun owners and retailers.

The economic implications of the bill could be significant, as it may affect local ammunition retailers and their sales practices. Socially, the bill reflects a growing trend in legislative efforts to address gun violence and promote responsible firearm ownership in Colorado.

As discussions around House Bill 1133 continue, experts suggest that its passage could lead to further legislative measures aimed at regulating firearms and ammunition sales in the state. The bill's future remains uncertain, but its introduction marks a pivotal moment in Colorado's ongoing dialogue about gun control and public safety.