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How to Buy a Gun in Colorado
Buying a firearm in Colorado is legal for most eligible adults, but the process must follow both federal law and Colorado state regulations. This guide covers everything you need to know.
- legal
- safe
- bill of sale
How to Buy a Gun in Colorado — Quick Overview
- Who Can Buy: Adults 18+ not prohibited under Colorado or federal law
- Age Requirements: 21+ for handguns from licensed dealers; 18+ for private transfers and long guns
- Background Check: Required for ALL transfers including private sales — must go through a licensed FFL dealer
- Waiting Period: 3 business days mandatory for all purchases
- Private Sales: Require a background check through a licensed dealer — direct transfers without a check are illegal (family exceptions apply)
- Permit to Purchase: Not required
- Magazine Limit: 15 rounds maximum
- Bill of Sale: Strongly recommended in addition to required FFL transfer record
Table of Contents
Who Can Legally Buy a Gun in Colorado
Age Requirements for Buying a Gun in Colorado
Buying a Gun from a Licensed Dealer
Buying a Gun from a Private Seller in Colorado
Step-by-Step Guide to Buying a Gun in Colorado
Why Many Buyers Use GunTransfer
Documents Required to Buy a Gun in Colorado
Waiting Periods and Registration in Colorado
Interstate Gun Purchases
Colorado Gun Laws Every Buyer Should Understand
Responsible Firearm Ownership
FAQ About Buying a Gun in Colorado
Who Can Legally Buy a Gun in Colorado
Adults 18+ not prohibited under Colorado or federal law. All transfers require a background check.
To legally buy a firearm, a person generally must:
- Be legally allowed to possess firearms under federal law (18 U.S.C. § 922)
- Meet the minimum age requirements
- Provide valid government-issued photo ID when purchasing from a licensed dealer
- Not be a prohibited person under federal law
- Be a legal resident of the United States
Federal law prohibits certain individuals from purchasing or possessing firearms. These restrictions apply equally in all 50 states and the District of Columbia.
Individuals prohibited from purchasing or receiving firearms include:
- Convicted felons (any crime punishable by more than one year imprisonment)
- Persons convicted of domestic violence misdemeanors
- Persons subject to qualifying restraining or protective orders
- Unlawful users of or persons addicted to controlled substances
- Persons adjudicated as mentally defective or committed to a mental institution
- Illegal aliens and persons who have renounced U.S. citizenship
- Persons dishonorably discharged from the armed forces
- Fugitives from justice
Attempting to purchase a firearm in Colorado while prohibited is a serious federal crime — punishable by up to 10 years in prison and fines up to $250,000.
Understanding your eligibility is the essential first step before buying any firearm in Colorado.
Age Requirements for Buying a Gun in Colorado
21
years old to purchase handguns from a dealer
18
18
18
Who Can Legally Buy a Gun in Colorado?
- Be legally allowed to possess firearms under federal law (18 U.S.C. § 922)
- Meet the minimum age requirements (18+ for private transfers; 21+ for handguns from dealers)
- Provide valid government-issued photo ID when purchasing from a licensed dealer
- Not be a prohibited person under federal law
- Be a legal resident of the United States
- Convicted felons
- Persons convicted of domestic violence misdemeanors
- Persons subject to qualifying restraining orders
- Unlawful users of controlled substances
- Persons adjudicated mentally defective
- Illegal aliens and persons who have renounced citizenship
- Persons dishonorably discharged from the armed forces
- Fugitives from justice
Buying a Gun from a Licensed Dealer in Colorado
Typical process when buying from a dealer:
In most cases the background check is completed quickly. Colorado has a waiting period: 3 business days for all firearm purchases.
How to Buy a Gun from a Private Seller in Colorado
Colorado requires a background check for private firearm transfers. Both parties must go through a licensed FFL dealer to complete the check. Direct person-to-person transfers without a background check are illegal in Colorado.
Private firearm purchases are common when:
- Buying a used firearm from another gun owner
- Purchasing from a collector or at a gun show
- Buying from a friend or family member
Both buyers and sellers in a private transaction remain responsible for complying with federal firearm laws. The buyer must be legally eligible to receive the firearm.
Although a bill of sale is not legally required, GunTransfer generates one automatically. The FFL dealer background check record plus the GunTransfer bill of sale gives both parties complete documentation.
COLORADO GUN PURCHASE QUICK REFERENCE
| PURCHASE TYPE | BACKGROUND CHECK | WAITING PERIOD | KEY NOTES |
|---|---|---|---|
| Licensed Dealer | Required — CBI check | 3 business days | 21+ handguns, 18+ long guns. CBI Point of Contact. |
| Private Sale | Required — via FFL/CBI | 3 business days | ALL private transfers need CBI background check. Family exceptions apply. |
| Online Purchase | Required at receiving FFL | 3 business days | Ships to Colorado FFL for CBI check plus 3-day wait. |
| Family Transfer (Immediate) | Exempt from check | 3 business days | Parent, child, sibling, spouse, grandparent, grandchild only. |
| Magazine > 15 rounds | Prohibited | Prohibited | Prohibited in Colorado. |
Step-by-Step Guide on How to Buy a Gun in Colorado
Whether buying from a dealer or a private seller, the typical process for legally purchasing a firearm in Colorado includes the following steps.
1
Confirm your eligibility
2
Choose the firearm
3
Go through a licensed FFL dealer
4
Complete required paperwork
5
Wait 3 business days
6
Take possession and document
Why Many Buyers Use GunTransfer
Private firearm purchases are legal in most states, but without documentation there is no proof of exactly when you took ownership — which can matter if the firearm is later reported stolen or connected to an incident that occurred before your purchase.
Establish a clear record of the firearm’s serial number and description
Document the exact date you took legal ownership
Protect yourself if the firearm was previously involved in an incident
Demonstrate responsible, law-abiding firearm ownership
For buyers, a signed GunTransfer bill of sale is proof that you own the firearm as of a specific date — critical if it is ever lost, stolen, or traced. GunTransfer makes this documentation simple for every private purchase in Colorado.
Documents Required to Buy a Gun in Colorado
When purchasing a firearm from a licensed dealer in Colorado, buyers must provide:
- A valid government-issued photo ID (driver's license or state ID)
- Current residential address
- Completed ATF Form 4473 (the dealer provides this)
Private firearm purchases in Colorado must also go through a licensed dealer for the background check. GunTransfer to document the transfer. GunTransfer.com performs a background check on the buyer and generates a complete bill of sale documenting both parties, the firearm details, serial number, sale price, and date — giving both buyer and seller legal protection.
Waiting Periods and Registration in Colorado
Colorado requires a waiting period of 3 business days for all firearm purchases for firearm purchases. You must wait this period before you can take possession of the firearm after purchase approval.
Colorado does not require firearm registration for firearms owned by private citizens. You are not required to register your newly purchased firearm with the state.
While no state registration is required, maintaining your own records — including a GunTransfer bill of sale — is a smart practice that documents your lawful ownership.
Interstate Gun Purchases
- Handguns purchased from an out-of-state seller must be transferred through a licensed Colorado FFL dealer who will conduct the required background check before releasing the firearm.
- Long guns (rifles and shotguns) may sometimes be purchased out of state if the purchase complies with the laws of both Colorado and the seller's state.
- You may never take direct possession of a handgun from a private out-of-state seller — it must be shipped to a Colorado FFL dealer first.
Colorado Gun Laws Every Buyer Should Understand
Although Colorado has relatively permissive firearm purchase laws, buyers should still understand several important regulations. Key rules include:
- Background checks required for ALL private transfers — not just dealer sales
- 3 business day waiting period applies to all purchases — dealer and private
- 15-round magazine limit — large-capacity magazines are prohibited
- Red flag (ERPO) law — courts may temporarily remove firearms from dangerous individuals
- Immediate family member transfers are exempt from the private sale background check requirement
Responsible Firearm Ownership
Buying a firearm comes with important ongoing responsibilities. Responsible gun owners should:
Store firearms securely and away from unauthorized access
Follow all firearm safety rules at all times
Stay informed about Colorado and federal firearm laws
Keep records of firearm purchases and transfers
When purchasing firearms privately in Colorado, keeping a GunTransfer bill of sale is one of the simplest steps a responsible buyer can take. GunTransfer performs a background check on the buyer and generates a complete, signed record that both parties keep.
Frequently Asked
Questions
Do private gun sales in Colorado require a background check?
Is there a waiting period in Colorado?
What is Colorado's magazine capacity limit?
Does Colorado require gun registration?
Explore All GUN Laws across the country
50 State Guides
How to Buy a Gun by State →How to Sell a Gun by State →Gun Transfer Laws by State →Background Check Laws by State →Private Gun Sale Laws by State →Gun Waiting Period Laws by State →Gun Inheritance Laws by State →Ready to Transfer ?
Colorado Firearm Purchase Resources: ATF — Identifying Prohibited Persons | ATF — Brady Law & 3-Day Default Rule | FBI NICS | Giffords — Colorado Gun Laws | ATF State Laws & Ordinances
Resource Center
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Gun transfer laws differ dramatically across the country. Our state-by-state guides walk you through what's required wherever you are — from private sale rules to mandatory background checks and dealer involvement.
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Legal Disclaimer
The information on this page is provided for general educational purposes only and does not constitute legal advice. Firearm laws may change and may vary depending on individual circumstances. Always consult official state resources or a qualified professional for guidance.
Legal Disclaimer
The information on this page is provided for general educational purposes only and does not constitute legal advice. Firearm laws may change and may vary depending on individual circumstances. Always consult official state resources or a qualified professional for guidance.
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