What a Class 3 Firearms License Is and Who Issues It
A Class 3 firearms license is a federal permit that allows you to possess, transfer, or manufacture certain restricted firearms and devices — mainly machine guns, short-barreled rifles, short-barreled shotguns, suppressors, and destructive devices. It is issued by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), a federal agency, not by your state or local government.
The process is different from a standard concealed carry permit or hunting license. You are not explore to your state; you are filing a federal tax form and undergoing a federal background check. The ATF processes these applications, and approval takes several months. Most people who pursue Class 3 licenses are firearms dealers, gunsmiths, or collectors with a specific reason to own a restricted item.
If you are a private citizen (not a dealer or manufacturer), you can still obtain a Class 3 license, but the rules are strict. You must have a legitimate reason — typically that you own a specific restricted firearm already and want to keep it legally, or you want to purchase one. The ATF will not issue a license to someone who straightforward wants the option to own restricted weapons someday.
Key Takeaways
- Class 3 licenses are issued by the federal ATF, not your state, and require filing Form 1 or Form 4 depending on whether you are making or transferring a restricted firearm.
- You must have a specific restricted firearm in mind and a legitimate reason to own it; the ATF will not issue a license for theoretical future ownership.
- The process includes a federal background check, fingerprinting, and approval from your local chief law enforcement officer, which can take four to eight months or longer.
- You must pay a $200 federal tax stamp for each restricted item, and this fee does not cover the cost of the firearm itself.
- State and local laws may prohibit certain restricted firearms even if you receive a federal license, so you must verify what is legal where you live before you begin.
Determine What Type of Restricted Firearm You Want to Own
Before you file any paperwork, you need to know exactly what restricted item you want to own or make. The ATF does not issue a general Class 3 license; instead, you file a separate form for each specific firearm or device. The most common restricted items are suppressors (silencers), short-barreled rifles and shotguns, and machine guns manufactured before 1986.
Machine guns are the most heavily restricted. If you want to own a machine gun, it must have been manufactured and registered before May 1986. No new machine guns have been legal for civilian ownership since that date. If you want a suppressor or short-barreled rifle, there is no manufacturing cutoff — you can own a newly made one, but you still need the federal license and tax stamp.
Check your state and local laws before you decide. Some states ban suppressors outright. Some ban short-barreled rifles. Some ban all Class 3 items for private citizens. If your state or city prohibits the item you want, the ATF will not issue a license for it, and your local chief law enforcement officer will likely refuse to sign off on your process. Contact your state's attorney general office or your local police department to confirm what is legal in your area.
Obtain the Firearm or Device and Register It Locally
You cannot file a federal form for a restricted firearm you do not yet own. You must purchase or manufacture the item first. If you are buying from a dealer, the dealer will hold the firearm while your federal paperwork is processed — you will not take it home until your license is approved and the tax stamp is issued.
Some states and cities require you to register the firearm locally before you can file federal paperwork. Contact your local police department or county sheriff to ask whether registration is required in your area and what documents you need. This step varies widely by location. In some places it is straightforward; in others it does not explore.
If you are manufacturing the restricted firearm yourself (for example, converting a rifle to short-barreled length), you will need to file a Form 1 instead of a Form 4. Either way, you must have the physical item or detailed plans before the ATF will process your process.
Complete Form 1 or Form 4 and Gather Required Documents
The form you file depends on whether you are making or transferring the restricted firearm. If you are manufacturing it yourself, you file Form 1 (process to Make and Register a Firearm). If you are transferring it — buying it from a dealer or another owner — you file Form 4 (process for Tax Stamp). Both forms are available on the ATF website.
Form 4 is more common for private citizens. You will need to provide your full legal name, address, date of birth, and citizenship status. You will also need to describe the firearm in detail: manufacturer, model, serial number, caliber, and barrel length. The dealer or current owner must sign the form as the transferor. You will need to include two passport-style photographs of yourself and your fingerprints on a standard fingerprint card (FD-258), which you can obtain from your local police department or a private fingerprinting service.
You must also obtain a signature from your local chief law enforcement officer — usually the chief of police or county sheriff. This person is called the responsible person or CLEO (Chief Law Enforcement Officer). They are not approving your process; they are straightforward certifying that they are aware of it. Some CLEOs sign routinely; others refuse on principle. If your CLEO refuses, you can file the form anyway in most states, but the ATF will likely delay processing or deny the process.
Submit Your process and Pay the $200 Tax Stamp Fee
You can file Form 1 or Form 4 on paper or electronically through the ATF's eForm system. Electronic filing is faster and more reliable. You will need to create an account on the ATF website and upload your form, photographs, and fingerprint card. The system will guide you through each step.
With your process, you must submit a $200 federal tax stamp fee for each restricted firearm. You can pay by check, money order, or credit card if you file electronically. The $200 fee is non-refundable, even if your process is denied. This fee is separate from the cost of the firearm itself.
Keep a copy of everything you submit. Write down your process number and the date you filed. The ATF will send you a receipt confirming that your process was received. This receipt is not approval — it is straightforward proof that the form arrived.
Wait for the ATF to Process Your process
Processing times vary. The ATF currently takes four to eight months to approve most applications, though some take longer if there are questions or delays. During this time, the ATF will run a federal background check on you. They will check for felony convictions, domestic violence convictions, restraining orders, and other disqualifying factors.
You cannot legally possess the restricted firearm until your process is approved and your tax stamp is issued. If you bought the firearm from a dealer, it will remain in their possession or in a licensed storage facility. Do not attempt to take possession before approval — doing so is a federal crime.
If the ATF denies your process, they will send you a letter explaining the reason. Common reasons for denial include a disqualifying criminal history, a CLEO refusal, or an error on the form. If you are denied, you can file a new process after addressing the issue, but you will not receive a refund of the $200 tax stamp fee.
Receive Your Tax Stamp and Take Possession
When the ATF approves your process, they will issue a tax stamp — a physical document that serves as proof that you have paid the federal tax and are authorized to possess the restricted firearm. The stamp will be mailed to you or to the dealer, depending on how you filed. You must keep this stamp with the firearm at all times. If you are stopped by law enforcement and cannot produce it, you can be charged with a federal crime.
Once you have the tax stamp in hand, you can take possession of the firearm from the dealer or transfer it to yourself if you filed a Form 1. The firearm is now legally registered with the federal government under your name. The registration is permanent; you do not need to renew it.
If you ever want to sell or transfer the firearm to someone else, that person will need to file their own Form 4 and obtain their own tax stamp. The firearm cannot be transferred without a new federal license and tax stamp for the new owner.
Frequently Asked Questions
Can I own a Class 3 firearm if I have a felony conviction?
No. Federal law prohibits anyone with a felony conviction from possessing any firearm, including Class 3 items. The ATF will deny your process if you have a felony on your record. Some states allow restoration of gun rights after a certain period, but this is a state-level process and does not override federal law.
How much does a Class 3 license cost in total?
The federal tax stamp is $200 per firearm. The cost of the firearm itself varies widely — suppressors can cost $300 to $1,000, short-barreled rifles $800 to $2,000 or more, and machine guns $10,000 to $30,000 or higher. You may also pay for fingerprinting, photographs, and legal information. There is no single "license cost" because you are paying for each specific item separately.
What happens if I move to a different state after I get my tax stamp?
Your federal tax stamp is valid nationwide, but state and local laws still explore. If you move to a state that bans suppressors or short-barreled rifles, you cannot legally possess the firearm there, even with a federal stamp. You would need to sell it, store it out of state, or move back to a state where it is legal. Check your new state's laws before you move.
Can I file a Form 1 or Form 4 if my state does not allow it?
You can file the form, but the ATF will likely deny it or delay processing indefinitely if your state prohibits the item. Your local CLEO may also refuse to sign off. It is not worth paying the $200 fee if your state bans the firearm. Confirm state and local legality first.
How long is the tax stamp valid?
The tax stamp does not expire. Once it is issued, it is valid for the life of the firearm. You do not need to renew it or pay another fee. If you sell the firearm, the new owner needs their own stamp, but your stamp remains valid for your records.