Navigating Colorado’s New Semi-Automatic Firearm Laws
As a community of responsible gun owners, hunters, and second amendment advocates here in Colorado, staying on top of the legal landscape is a big part of what we do. Signed into law in April 2025, Senate Bill 25-003 (SB25-003) takes full effect on August 1, 2026, just over two weeks away.
Because this law directly impacts how certain firearms are bought, sold, and transferred in our state starting August 1, 2026, we wanted to break down exactly what this means for you, your current collection, and any future purchases.
Here is what you need to know to stay informed and compliant.
What is a “Specified Semi-Automatic Firearm”?
Under the new law, the state defines a “specified semi-automatic firearm” primarily as:
- A semi-automatic rifle or shotgun with a detachable magazine.
- A gas-operated semi-automatic handgun with a detachable magazine.
Important Handgun Clarification: This restriction applies strictly to gas-operated semi-automatic handguns. The vast majority of pistols on the market—recoil-operated handguns, which make up over 90% of the handgun market, are completely unaffected by this law.
Official Model Guide is Now Available: The Department of Revenue (DOR) published draft guidance on May 15, 2026, collected public comments through June 5, and released the finalized, official model-by-model list on July 1, 2026. You can view and download the official guidance directly on the DOR Specialized Business Group / Firearms Dealer Division website to check exactly which models are impacted.
The Core Rule: Sales & Transfers After August 1, 2026
Beginning August 1, 2026, Colorado is implementing a strict prohibition on the manufacture, distribution, transfer, sale, and purchase of these specified semi-automatic firearms.
However, there is a massive piece of nuance to this law that every Colorado resident needs to understand: the training exemption.
The Training Exemption: How You Can Still Legally Purchase
The law does not completely ban the transfer or purchase of these firearms if you meet specific safety and training criteria. You can legally purchase or receive a specified semi-automatic firearm if you meet one of the following tracks:
- Track 1: You have completed a Colorado Parks and Wildlife (CPW) certified hunter education course AND you have completed a basic firearms safety course within the 5 years prior to your purchase.
- Track 2: You have completed an extended firearms safety course within the 5 years prior to your purchase.
- Track 3: You completed an extended firearms safety course more than 5 years ago, but have taken a basic firearms safety course within the last 5 years.
Getting Your “Firearms Course Card”
To even enroll in these basic or extended safety courses, Colorado residents must first apply for and hold a valid Firearms Safety Course Eligibility Card.
- These cards are issued by your local County Sheriff.
- The process involves a name-based background check and a processing fee.
- Once you have the card and pass the required courses, your completion will be logged into a new statewide database managed by CPW, which Federal Firearms Licensees (FFLs) like us will check electronically when processing a transfer.
What About the Guns You Already Own?
A common point of confusion is whether current owners have to give up their firearms. No. The restrictions apply only to new manufacture, sales, and transfers starting August 1, 2026.
Furthermore, the law explicitly allows certain standard exemptions, such as transferring firearms out of state, selling/transferring to a licensed FFL dealer, transfers that happen by operation of law (like an inheritance due to a death), and exemptions for active law enforcement, military, and certified gunsmiths.
Rapid-Fire Devices and Large-Capacity Magazines
Aside from the semi-automatic regulations, SB25-003 makes a couple of other major changes to Colorado’s dangerous weapons definitions:
- Rapid-Fire Devices: Devices that increase the rate of fire of a semi-automatic firearm (such as binary triggers and bump stocks) are now officially classified as dangerous weapons under state law.
- Large-Capacity Magazines: The unlawful sale, transfer, or possession of a large-capacity magazine has been reclassified as a Class 1 misdemeanor.
We’re Here to Help You Navigate the Changes
Changes to firearm laws can be incredibly confusing, and the penalties for non-compliance are steep (violating the new transfer laws can range from a misdemeanor to a felony for repeat offenses, along with a loss of firearm privileges).
At Basalt Firearms, our priority is keeping our community safe, lawful, and fully equipped. We are closely monitoring the rollout of the CPW tracking system, the Sheriff eligibility card rules, and the official state model guides.
If you have questions about whether a specific firearm you own or want to buy is impacted, or if you need guidance on how to get started with your hunter education or safety courses, don’t hesitate to reach out. Stop by the shop or contact us through the website, we’re here to help you navigate these shifting regulations every step of the way!
A Note on Legal Advice
Disclaimer: While we strive to provide accurate information based on official state text (SB25-003), law can be subject to court challenges and varying legal interpretations. This blog post is for informational purposes and should not be taken as formal legal advice. For specific legal compliance questions, always consult with a qualified attorney.
