MAGAZINE CAPACITY
15-round limit
Larger magazines are generally not transferable there.
Reviewed July 2026
Colorado gun rules at a glance.
The facts buyers and dealers ask about most, in plain language — then check any specific firearm, magazine, or ammunition SKU against Colorado in one search.
SUPPRESSORS
Legal with NFA process
Transfers through an SOT dealer with ATF Form 4 and a tax stamp.
SHIPPED AMMUNITION
Ships direct
Buyers must be 21 or older for non-rimfire ammunition, in store and online (HB25-1133, July 2026). Shipped ammunition requires age verification and a signed acknowledgment at delivery.
FIREARMS
Through a licensed dealer
Every online firearm purchase transfers through a licensed dealer there, with a federal background check at pickup.
Check a specific gun.
Search 29,000+ SKUs and see whether that exact configuration is flagged for Colorado — compliant variants included.
What is the magazine capacity limit in Colorado?
Colorado limits magazine capacity to 15 rounds. Manufacturers sell compliant versions of most popular firearms and magazines.
Are suppressors legal in Colorado?
Yes. Suppressors are legal to own in Colorado through the federal NFA process: an SOT dealer transfer, ATF Form 4, and a tax stamp.
Can ammunition be shipped to Colorado?
Yes, ammunition ships direct to adults in Colorado under standard federal age rules, with buyers verified as 21 or older at checkout.
FFL dealers in Colorado/Check another state
This checker combines distributor compliance data with plain language state law summaries. It is informational, not legal advice, and laws change. Confirm anything that matters with the state itself, your dealer, or your attorney.