If you own a firearm, or are thinking about purchasing one in Colorado, you may have wondered: What are the differences between Colorado gun laws and federal gun laws?
The answer can be confusing because firearm owners are subject to both federal laws and Colorado state laws. Federal law establishes nationwide requirements, while Colorado can impose additional rules and restrictions that apply within the state.
Understanding both is an important part of being a responsible firearm owner.
Important: This article is intended for general educational purposes and is not legal advice. Firearm laws can change, and individual circumstances can affect how a law applies. If you have a specific legal question, consult a qualified attorney or the appropriate government agency.
Federal Gun Laws vs. Colorado Gun Laws
The simplest way to think about the difference is:
Federal law establishes the baseline requirements that apply across the United States. Colorado law adds additional requirements that apply to firearm transactions and possession within Colorado.
For example, federal law requires federally licensed firearm dealers (FFLs) to conduct background checks on purchasers through the National Instant Criminal Background Check System (NICS), subject to applicable exceptions.
Colorado goes further in several areas. Colorado requires background checks for certain private firearm transfers and has its own state background-check process through the Colorado Bureau of Investigation (CBI). Colorado also has a waiting period before a purchased firearm can be delivered.
That means complying with federal law does not necessarily mean you’ve satisfied every requirement under Colorado law.
1. Background Checks
Federal Law
Under federal law, federally licensed firearm dealers generally must conduct a background check before transferring a firearm to a purchaser. The check is conducted through NICS, which is operated by the FBI.
Federal law also identifies categories of people who are generally prohibited from receiving or possessing firearms, including certain people convicted of qualifying crimes, people subject to certain restraining orders, and other prohibited categories.
Colorado Law
Colorado has additional requirements surrounding firearm transfers.
The Colorado Bureau of Investigation serves as the state’s point of contact for firearm background checks. Colorado law also requires background checks for private firearm transfers in circumstances where federal law alone may not require one.
Colorado law further prohibits a firearm transfer from proceeding until the required background check has been approved.
Bottom line: A firearm transaction in Colorado may be subject to both federal and state background-check requirements.
2. Waiting Periods
One of the major differences between federal and Colorado firearm laws is the waiting period.
Federal Law
Federal law does not establish a general nationwide three-day waiting period for every firearm purchase.
Colorado Law
Colorado requires a waiting period before a purchased firearm can be delivered.
Under current Colorado law, the firearm generally cannot be delivered until the later of three days after the required background check is initiated or the seller receives approval for the transfer.
This means that even if a background check is approved quickly, Colorado’s waiting-period requirement may still apply.
For Colorado buyers, this is an important difference to understand when planning a firearm purchase.
3. Age Requirements
Age requirements are another area where Colorado law can be more restrictive than federal law.
Federal law establishes different minimum ages depending on the type of firearm and whether the transaction is conducted by a federally licensed dealer.
Colorado has established additional age restrictions. Current Colorado law generally prohibits the sale of a firearm to, or purchase of a firearm by, a person under 21 years of age, subject to specific provisions and exceptions in state law.
Because age requirements can depend on the specific transaction and firearm, prospective buyers should verify the current requirements before attempting to purchase a firearm.
4. Private Firearm Transfers
Federal and Colorado law also differ when it comes to private firearm transfers.
Federal law regulates firearm transfers by prohibited persons and establishes requirements involving federally licensed dealers and interstate transactions.
Colorado has gone further by requiring background checks for private firearm transfers in many circumstances. Colorado law also requires the appropriate approval before a transfer can occur.
This is one reason it’s important not to assume that a private transfer is automatically exempt from the same requirements that apply to a purchase from a gun store.
5. Concealed Carry Laws
Concealed carry is another area where firearm owners need to consider both federal and state law.
Federal law establishes restrictions in certain federally controlled locations and under certain circumstances.
Colorado law governs concealed handgun permits and establishes its own requirements for lawful concealed carry within the state.
Colorado’s concealed-handgun training requirements were updated beginning July 1, 2025. For an initial permit, qualifying training must meet state standards and include subjects such as firearm safety, safe storage, shooting fundamentals, federal and state firearm laws, self-defense law, and interactions with law enforcement. The initial course must include at least eight hours of instruction, including a live-fire exercise and written examination.
For anyone considering concealed carry in Colorado, understanding the current state requirements is essential.
6. Magazine Restrictions
Colorado also has firearm restrictions that go beyond federal requirements.
For example, Colorado law prohibits the sale, transfer, or possession of certain large-capacity ammunition magazines, subject to the definitions and exceptions contained in state law.
This is an important example of why firearm owners should check Colorado-specific laws rather than relying solely on federal regulations.
7. Semiautomatic Firearm Regulations
Colorado has also enacted additional regulations concerning specified semiautomatic firearms.
Beginning August 1, 2026, Colorado law establishes restrictions concerning specified semiautomatic firearms, including restrictions on their manufacture, distribution, sale, and transfer as defined by state law.
Because these rules are relatively recent and complex, firearm owners should consult the current Colorado statutes and official state guidance before buying, selling, transferring, or otherwise dealing with a firearm that may fall within these definitions.
8. Federal Law Still Applies in Colorado
It’s important to remember that Colorado law does not replace federal law.
Both apply.
A firearm owner in Colorado must comply with applicable federal requirements as well as Colorado requirements.
For example, a transaction could satisfy a Colorado requirement but still violate federal law if the individual involved is federally prohibited from possessing firearms.
Likewise, simply following federal requirements does not necessarily satisfy Colorado’s additional requirements.
Think of it as two layers:
Federal Law → Nationwide baseline
Colorado Law → Additional state requirements
Both layers matter.
Why Understanding Both Laws Matters
One of the biggest mistakes a new firearm owner can make is assuming that “legal under federal law” automatically means “legal in Colorado.”
It doesn’t necessarily work that way.
Colorado has enacted additional firearm regulations covering areas such as:
- Background checks
- Waiting periods
- Private transfers
- Minimum purchase age
- Concealed carry training
- Magazine restrictions
- Specified semiautomatic firearms
- Firearm dealer requirements
And firearm laws can change.
For example, Colorado’s firearm regulations have undergone significant changes in recent years, including new concealed-carry training requirements and additional regulations taking effect in 2026.
That’s why responsible firearm ownership includes staying informed about the laws that apply to you.
What Should Colorado Gun Owners Do?
If you’re purchasing your first firearm, moving to Colorado, considering concealed carry, or simply trying to understand your responsibilities as a firearm owner, start with the basics:
1. Know the federal requirements
Understand the federal rules that apply to firearm purchases, possession, transfers, and transportation.
2. Know Colorado’s additional requirements
Don’t assume federal compliance is enough. Colorado has additional rules that may affect your purchase or possession of a firearm.
3. Keep up with changes
Firearm laws can change from year to year. A law that applied when you purchased a firearm may not necessarily be the same law that applies today.
4. Get proper training
Understanding how to safely handle a firearm is just as important as understanding the laws surrounding firearm ownership.
5. Ask questions
If you’re unsure about a firearm transaction or legal requirement, don’t guess. Consult the relevant government agency or a qualified attorney.
Final Thoughts
Federal gun laws and Colorado gun laws work together.
Federal law establishes nationwide firearm regulations, while Colorado has adopted additional requirements that apply to firearm owners and transactions within the state.
For Colorado gun owners, understanding both levels of regulation is an important part of responsible firearm ownership.
If you’re new to firearms, purchasing your first firearm, or interested in learning more about Colorado’s firearm laws, education and training are great places to start.
At Basalt Firearms, our goal is to help Colorado firearm owners become more informed, confident, and responsible through quality firearms education and training.
Have questions about firearm training or getting started? Explore Basalt Firearms’ training resources or contact our team to learn more.
Frequently Asked Questions
Are Colorado gun laws stricter than federal gun laws?
In several areas, yes. Colorado has enacted additional requirements beyond federal law, including a state waiting period, private-transfer background-check requirements, age restrictions, magazine restrictions, and additional regulations concerning specified semiautomatic firearms.
Do federal gun laws apply in Colorado?
Yes. Colorado firearm owners remain subject to applicable federal firearm laws in addition to Colorado state laws.
Does Colorado have a waiting period for buying a gun?
Yes. Colorado law generally requires the firearm to be held until the later of three days after initiation of the required background check or approval of the transfer.
Do private gun sales require a background check in Colorado?
Colorado law generally requires background checks for covered private firearm transfers. Specific exceptions and requirements can apply.
Are Colorado’s concealed-carry requirements different from federal law?
Yes. Colorado establishes its own concealed-handgun permit and training requirements, including updated training standards that took effect July 1, 2025.
Where can I find current Colorado firearm laws?
Because firearm laws can change, firearm owners should consult current Colorado statutes and official government resources rather than relying on an older article or summary.
This article is provided for general educational purposes and does not constitute legal advice. Firearm laws are subject to change and may vary based on individual circumstances. Always verify current federal, state, and local requirements and consult a qualified attorney for legal advice.
