Most people assume suppressors are totally illegal in Colorado. They hear “silencer” and think Hollywood spy movies. But here’s the thing: suppressors are actually legal in the state. Totally legal. You just need to follow the rules, and honestly, those rules aren’t as complicated as you might think.
Let me break down what you actually need to know about owning a suppressor in Colorado.
What Is a Suppressor?
A suppressor is a device you attach to the end of your gun barrel. It reduces the noise when you fire. Think of it like a car muffler, but for your firearm.
People also call them silencers. That’s the legal term. But they don’t actually make guns silent like in the movies. They just make them quieter and safer for your ears.
Suppressors help with hearing protection. They reduce recoil. They make shooting more enjoyable. And in Colorado, you can legally own and use them for hunting, target shooting, or home defense.
Colorado’s Tricky Legal Situation
Here’s where things get a little weird. Stay with me here.
Colorado law classifies suppressors as “dangerous weapons” under state statute CRS 18-12-102. According to this law, possessing a dangerous weapon is a felony. Sounds scary, right?
But wait. There’s more to the story.
The same law includes an important exception. You can legally possess a suppressor if you have “a valid permit and license” for it. This is called an affirmative defense.
What does that actually mean? Basically, if you follow federal law and get your suppressor registered with the ATF, you’re good in Colorado. The state recognizes federal approval as your permit and license.
So yes, suppressors are legal. You just need to do the paperwork.
Federal Law Controls Suppressor Ownership
The National Firearms Act handles suppressor regulation at the federal level. This law has been around since 1934. It requires you to register certain weapons and accessories, including suppressors.
Colorado doesn’t add extra state requirements. No special Colorado permits. No additional fees beyond what the feds require. Once you have federal approval, Colorado law is satisfied.
This makes Colorado one of 42 states where suppressors are legal. Eight states ban them completely. Colorado isn’t one of those states.
Pretty straightforward, honestly.
How to Legally Own a Suppressor in Colorado
Wondering if this applies to you? Let me walk you through the process.
First, you need to be at least 21 years old. That’s a federal requirement. You also need to be a legal U.S. resident and legally allowed to own firearms.
You can’t have any felony convictions. You can’t be under indictment. You can’t have certain misdemeanor domestic violence convictions. You can’t be an unlawful drug user. Basically, if you’re prohibited from owning guns, you’re prohibited from owning suppressors.
Here’s what the actual buying process looks like.
Step 1: Choose Your Suppressor
Find a suppressor that fits your needs. Different models work for different calibers. Some are for rifles. Some are for handguns. Some work with multiple calibers.
Buy from a licensed dealer. These are called FFLs (Federal Firearms Licensees). Many gun shops sell suppressors. Some dealers specialize in them.
Step 2: Complete ATF Form 4
This is the application for tax paid transfer. It’s the main paperwork you need. Your dealer will help you fill it out.
You’ll need to provide personal information. Your name, address, citizenship status. Details about the suppressor you’re buying.
Most dealers now use the electronic version called eForm 4. It’s faster than paper forms.
Step 3: Submit Fingerprints and Photo
You’ll need to get fingerprinted. Your dealer can usually do this. You’ll also need to submit a passport-style photo.
This is all part of the background check process. The FBI needs to verify your identity.
Step 4: Pay the Tax (Or Don’t, Starting 2026)
Hold on, this part is important. Big changes just happened.
Until December 31, 2025, you had to pay a $200 transfer tax. Every single suppressor. No exceptions.
But starting January 1, 2026, that fee is gone. Yep, totally gone. The “One Big Beautiful Bill” eliminated the tax stamp fee for suppressors.
You still need to submit the paperwork. You still need approval. But now you save $200 on every suppressor you buy.
Step 5: Wait for Approval
The ATF processes your application. They run your background check. They verify everything is correct.
Wait times have dropped dramatically. Like, seriously dropped. In late 2025, most eForm 4 applications were approved in just days. Some took less than a week. A few even got same-day approval.
That’s a huge change from the old days. People used to wait 9 to 12 months. Sometimes longer. Now it’s often just a matter of days.
Okay, pause. Read this carefully. The fast approval times might change in early 2026. Why? Because the $200 fee is gone, way more people are buying suppressors. The ATF expects a massive surge in applications.
So approval times might slow down temporarily. Maybe a few weeks instead of a few days. Maybe longer if the system gets overwhelmed. Nobody knows for sure yet.
Step 6: Take Possession
Once approved, the ATF sends your dealer the approved Form 4. This is your tax stamp. It’s now digital, not a physical stamp like the old days.
You can then pick up your suppressor. Some dealers in Colorado can even ship directly to your door, depending on their license.
And that’s it. You’re now a legal suppressor owner in Colorado.
Using an NFA Gun Trust
Not sure what counts as a violation? Let me explain trusts.
An NFA gun trust is a legal entity that owns your suppressor instead of you personally. It’s a popular option, and honestly, it has some real advantages.
With a trust, you can name other people as trustees. They can legally possess and use the suppressor. Your spouse, your kids over 21, whoever you trust.
If you die, the suppressor stays in the trust. It passes to your beneficiaries without going through probate. That’s a big deal for estate planning.
Many dealers offer free trusts when you buy a suppressor. Silencer Shop and Silencer Central both do this. It’s a nice perk.
The approval process is basically the same. You just file as a trust instead of as an individual. Wait times are similar either way.
Where You Can Use Suppressors in Colorado
This one’s probably the most important rule. You can use suppressors for hunting in Colorado. All game animals. All non-game animals. No restrictions.
Want to hunt elk in the Rockies with a suppressor? Legal. Coyotes on the plains? Legal. Target shooting at the range? Totally legal.
Colorado Parks and Wildlife allows it. You just need to follow all other hunting regulations. Valid license. Proper season. Legal weapon. All the normal stuff.
You can also use suppressors on public land. State land. Federal land. Bureau of Land Management property. National Forests. No special permits needed beyond your regular hunting license.
This is great for hunters. Colorado has amazing hunting opportunities. Adding a suppressor makes the experience better. Quieter. Less disturbance to other hunters and wildlife.
Denver Has Extra Restrictions
Here’s where it gets interesting. Denver has its own city ordinances that go beyond state law.
Denver bans certain firearms they call “assault weapons.” These are basically any centerfire rifle with a detachable magazine that can hold more than 15 rounds. The city also restricts magazines over 15 rounds.
Sound complicated? It’s actually not. Denver’s rules apply to the firearms themselves, not to suppressors specifically. But if you’re using a suppressor on a gun in Denver, make sure the gun itself is legal there.
The good news? Denver has an exception for people just passing through. If you’re not a Denver resident and you’re just traveling through the city, you can have standard-capacity magazines and certain restricted firearms. You’re welcome to do so.
But if you live in Denver or plan to stay there, check the local rules carefully. You don’t want to accidentally break a city ordinance.
Penalties for Illegal Possession
Most people don’t realize how strict these laws are. Let’s talk about what happens if you break them.
If you possess a suppressor in Colorado without proper federal approval, it’s a Class 5 felony. First offense.
That means 1 to 3 years in prison. Fines from $1,000 to $100,000. And that’s just state charges.
Federal charges are even worse. Illegal suppressor possession under federal law carries up to 10 years in prison. Fines up to $250,000. No joke.
A second violation in Colorado gets bumped to a Class 4 felony. That’s 2 to 8 years in prison. The penalties keep going up.
Don’t be one of them. Just do the paperwork. Get the approval. It’s easier than dealing with a felony conviction.
Crossing State Lines
Can you travel with your suppressor? Yep.
Federal law doesn’t require you to notify the ATF when you cross state lines with a suppressor. That’s different from short-barreled rifles or machine guns, which do require notification.
But here’s the catch. You need to know the laws in every state you visit. Eight states ban suppressors completely: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, Rhode Island, and Washington D.C.
If you’re traveling through those states, leave your suppressor at home. Possession is illegal there, even with federal approval.
Other states may have their own rules. Check before you travel. Don’t assume your Colorado approval works everywhere.
Colorado Magazine Restrictions
Quick tip box here. Colorado has a statewide ban on magazines holding more than 15 rounds. This law passed in 2013.
It doesn’t affect suppressors directly. But many suppressor owners also own rifles that use larger magazines. Just know that in Colorado, magazines over 15 rounds are restricted.
There’s an exception if you owned the magazine before July 1, 2013. You can keep it. You just can’t sell it or transfer it.
Non-residents passing through Colorado can have standard-capacity magazines. The restriction mainly affects Colorado residents and people staying in the state.
Recent Changes and Future Outlook
Now, here’s where things get serious. The suppressor world just changed in a big way.
The elimination of the $200 tax stamp is the biggest NFA reform in nearly 100 years. Literally. The National Firearms Act has stayed mostly the same since 1934.
This makes suppressors way more accessible. The financial barrier is gone. You still need approval, but now it doesn’t cost anything.
Expect huge demand in 2026. Dealers are already preparing for it. Some are seeing record sales. Many people are ordering now to beat the rush.
Will Colorado change its laws? Maybe. The state law still classifies suppressors as dangerous weapons. That wording could change someday. But for now, the federal approval system works fine.
There’s also talk about potential deregulation at the federal level. Some bills in Congress want to remove suppressors from the NFA entirely. That would make them regular firearm accessories. No paperwork. No approval process.
Honestly, this is the part most people miss. If that happens, Colorado’s law could become a problem. Remember, Colorado law says suppressors are illegal unless you have a “valid permit and license.” If the federal permit system goes away, what counts as valid?
This is still theoretical. No deregulation bill has passed yet. But it’s something to watch.
Buying Online vs. Local Dealers
You can buy suppressors online. Seriously. Companies like Silencer Shop and Silencer Central ship to all 42 legal states.
Here’s how it works. You order online. The company helps you with all the paperwork. You do your fingerprints at a local kiosk or dealer. They submit everything electronically.
Once approved, they ship directly to your door. Some companies are licensed to do this. Others ship to a local dealer for pickup.
It’s convenient. Often cheaper than buying local. And the big online retailers have tons of inventory.
But local dealers have advantages too. You can see the suppressor in person. Ask questions face to face. Sometimes get same-day help with paperwork.
Many Colorado gun shops sell suppressors. Denver, Colorado Springs, Grand Junction, Fort Collins. Most cities have at least one dealer.
Your choice. Both options work.
Suppressors and Home Defense
This confuses a lot of people. Can you use a suppressor for home defense?
Absolutely. It’s totally legal. And actually, it’s a smart idea.
If you ever have to fire a gun indoors, the noise is brutal. Permanently damaging brutal. A suppressor reduces that risk. It protects your hearing and your family’s hearing.
It also helps you communicate. In a high-stress situation, being able to hear and talk matters. A suppressor makes that easier.
Some people worry suppressors make guns less effective. Not true. The bullet does the same thing. The suppressor just makes it quieter.
Colorado law doesn’t restrict this. You can keep a suppressed firearm for home defense. Just make sure it’s stored safely and legally.
Suppressors for Disabled Shooters
Here’s something most people don’t know. Suppressors help disabled shooters a lot.
If you have hearing sensitivity, tinnitus, or other auditory issues, suppressors make shooting possible. They reduce the sensory overload.
If you have shoulder or joint problems, suppressors help too. They reduce recoil. Less recoil means less pain.
Colorado doesn’t have special provisions for disabled shooters. But the standard process still applies. If you can legally own a firearm, you can get a suppressor.
Some shooting ranges offer accommodations for disabled shooters. Ask around. The community is generally supportive.
What About Homemade Suppressors?
Don’t. Seriously, don’t.
Making your own suppressor requires ATF approval through Form 1. That’s a different process than buying one. It’s legal if you do it right. But doing it right matters a lot.
If you make a suppressor without approval, it’s a federal felony. The ATF takes this very seriously. They prosecute these cases aggressively.
There are legal ways to build suppressors. You need to file Form 1 first. Pay the fee (or not, starting 2026). Wait for approval. Then you can manufacture your suppressor.
But honestly? Just buy one. It’s easier. It’s safer legally. And quality commercial suppressors work better than most homemade designs anyway.
Colorado Parks and Wildlife Regulations
Let’s talk about the specifics. Colorado Parks and Wildlife doesn’t add extra rules for suppressors.
Their regulations say you can use any legal firearm for hunting. Suppressors are legal firearm accessories. So they’re allowed.
You still need to follow caliber restrictions. Minimum calibers for big game. Legal methods of take. All the normal hunting rules.
But the suppressor itself doesn’t require additional permits. No special tags. No extra fees beyond your regular hunting license.
This is honestly pretty great. Some states restrict suppressor hunting. Colorado doesn’t. You’re free to use them.
Red Flag Laws and Suppressors
Colorado has an Extreme Risk Protection Order law. People call it a red flag law. It lets courts temporarily remove firearms from people who might harm themselves or others.
If you’re subject to an ERPO, you have to surrender your firearms. That includes suppressors. They’re considered firearms under the NFA.
You’ll get your suppressors back when the order expires. Assuming you’re legally allowed to possess them again.
This is rare. Most people never deal with an ERPO. But it’s worth knowing about.
If you’re worried about this, talk to a lawyer. Estate planning with an NFA trust can help protect your property. But that’s a whole separate topic.
Frequently Asked Questions
Are suppressors legal in Colorado? Yes, suppressors are legal in Colorado as long as you have federal approval through the ATF. You need to complete Form 4, pass a background check, and register your suppressor under the National Firearms Act.
How long does it take to get a suppressor in Colorado? As of late 2025, eForm 4 applications were being approved in just a few days to two weeks on average. However, with the elimination of the $200 tax stamp in 2026, approval times may increase due to higher demand.
Can I hunt with a suppressor in Colorado? Absolutely. Colorado allows suppressor use for hunting all game and non-game animals. You don’t need any special permits beyond your federal approval and regular hunting license.
How much does a suppressor cost in Colorado? Suppressors typically range from $400 to $1,500 depending on the model and caliber. Starting January 1, 2026, you no longer have to pay the $200 federal transfer tax, saving you money on every purchase.
Do I need a special permit in Colorado for a suppressor? No. Colorado recognizes your federal ATF approval as sufficient. There are no additional state-level permits or licenses required beyond completing the federal Form 4 process.
Can I use a suppressor in Denver? Yes, but be aware that Denver has additional restrictions on certain firearms and magazines. The suppressor itself is legal, but make sure the gun you’re attaching it to complies with Denver’s local ordinances.
What happens if I get caught with an illegal suppressor? Illegal possession is a Class 5 felony in Colorado, carrying 1 to 3 years in prison and fines up to $100,000. Federal charges can add up to 10 years in prison and $250,000 in fines.
Can I travel to other states with my Colorado suppressor? Yes, but only to states where suppressors are legal. Eight states ban them completely: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, Rhode Island, and Washington D.C.
Do I need an NFA trust to buy a suppressor? No, you can buy as an individual. However, many people choose trusts because they allow multiple people to legally use the suppressor and simplify inheritance. Many dealers offer free trusts with purchase.
Can I buy a suppressor online in Colorado? Yes. Companies like Silencer Shop and Silencer Central sell suppressors online to Colorado residents. They handle all the paperwork and ship to you or a local dealer once approved.
Final Thoughts
Now you know the basics. Suppressors are legal in Colorado. The process is straightforward. The wait times are short. And starting in 2026, it’s even cheaper.
If you’ve been thinking about getting a suppressor, there’s never been a better time. The barriers are lower than ever.
Just follow the rules. Do the paperwork. Wait for approval. And enjoy quieter, safer shooting.
Stay informed, stay safe, and when in doubt, look it up or ask a lawyer.
References
- Colorado Revised Statutes 18-12-102 – Possessing a dangerous or illegal weapon, https://leg.colorado.gov/sites/default/files/images/olls/crs2024-title-18.pdf
- Bureau of Alcohol, Tobacco, Firearms and Explosives – National Firearms Act, https://www.atf.gov/rules-and-regulations/national-firearms-act
- Colorado Parks and Wildlife – Hunting Regulations, https://cpw.state.co.us/
- Silencer Shop – Colorado Suppressor Laws, https://www.silencershop.com/suppressor-laws-colorado
- ATF Current Processing Times, https://www.atf.gov/resource-center/current-processing-times
