A private gun sale is legal under federal law, but doing one correctly means confirming you aren’t acting as an unlicensed dealer, verifying the buyer lives in your state and isn’t prohibited from owning a firearm, following whatever extra rules your state adds on top, and keeping a written record of the transfer. Federal law sets the floor. More than 20 states require a background check even between private parties, and many add permits, waiting periods, or registration. Get the state piece wrong and a lawful-sounding sale can be a felony.
Are You a Private Seller or an Unlicensed Dealer
Federal law lets you sell firearms from your personal collection without a license. It does not let you buy and resell for profit without one. Anyone in the business of dealing in firearms needs a Federal Firearms License, and selling without one is punishable by up to five years in prison, a fine up to $250,000, or both, with the firearms subject to seizure.1Bureau of Alcohol, Tobacco, Firearms and Explosives. Do I Need a License to Buy and Sell Firearms
The Bipartisan Safer Communities Act, signed in June 2022, tightened the definition. Under the current standard, anyone who devotes time, attention, and labor to buying and selling firearms as a regular course of trade to predominantly earn a profit through repetitive purchases and resales needs a license.2Bureau of Atlanta, Tobacco, Firearms and Explosives. Justice Department Publishes New Rule To Update Definition of Engaged in the Business as a Firearms Dealer Thinning out guns you personally own is fine. Flipping them regularly, even on a small scale, is not.
Who You Cannot Sell To
Federal law makes it a crime to sell or transfer a firearm to anyone you know or have reasonable cause to believe is prohibited from possessing one. A knowing violation carries up to 15 years in federal prison, a fine, or both.3Office of the Law Revision Counsel. 18 USC 924 – Penalties “Reasonable cause to believe” means willful ignorance won’t save you. If the warning signs are there and you proceed anyway, you can still be charged.
The prohibited categories are broad:4Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
- Anyone convicted of a crime punishable by more than one year of imprisonment, which covers most felonies
- Fugitives from justice
- Anyone who unlawfully uses or is addicted to a controlled substance; because federal law still classifies marijuana as a controlled substance, this applies even in states where marijuana is legal
- Anyone a court or other authority has found to be a danger to themselves or others due to mental illness, or who has been involuntarily committed
- Anyone unlawfully in the United States or admitted under most nonimmigrant visas
- Anyone discharged from the military under dishonorable conditions
- Anyone who has renounced U.S. citizenship
- Anyone subject to a qualifying domestic violence restraining order
- Anyone convicted of a misdemeanor crime of domestic violence
You also cannot sell to someone you know intends to resell the firearm to a prohibited person or to use it in a felony, a terrorist act, or drug trafficking.4Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts If a buyer is evasive about basic questions, reluctant to show identification, or nervous in a way that doesn’t fit the situation, walk away.
Age Rules Are Different Than at a Gun Store
People routinely assume the store rules apply everywhere. They don’t. A licensed dealer cannot sell a handgun to anyone under 21 or a long gun to anyone under 18.4Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts In a private transaction, federal law prohibits transferring a handgun to anyone under 18 and sets no minimum age for a long gun.5Bureau of Alcohol, Tobacco, Firearms and Explosives. Minimum Age for Gun Sales and Transfers
Many states set higher minimums, and some require buyers to be 21 regardless of whether a dealer is involved. Check your state before selling to a young buyer.
State Rules That Change the Process
Federal law is the floor. Your state almost certainly adds requirements, and the differences from one state to the next are large enough that a lawful sale in one place is a criminal offense in another. Research your own state’s rules before agreeing to a transaction.
Background Checks on Private Sales
More than 20 states and Washington, D.C., require background checks for at least some private firearm sales. In those states, the standard path is to meet the buyer at a licensed dealer, have the buyer complete an ATF Form 4473, and let the dealer run the buyer through the National Instant Criminal Background Check System. The firearm transfers only after the check clears. Dealer fees for this service commonly run between $25 and $75. Skipping a required check is a criminal offense in every state that mandates one.
Permit-to-Purchase Requirements
Around ten states and D.C. require buyers to hold a license or permit before purchasing a firearm, private sale included. Permits typically involve an application through local or state law enforcement, fingerprinting, and a deeper background check than NICS alone. As the seller, you verify the permit before completing the transfer.
Waiting Periods
Several states require a mandatory delay between the purchase agreement and the physical handoff, ranging from a few days to more than a week. Even after a background check clears, the gun stays with you until the waiting period ends.
Registration and Reporting
Some states require private sales to be reported to a state agency or the firearm registered in the new owner’s name. If you skip a required registration and the gun turns up in a crime, tracing can still lead back to you.
Firearm Type Restrictions
A handful of states restrict or ban private sales of certain categories, including firearms classified as assault weapons and those with large-capacity magazines. Confirm the specific firearm you’re selling isn’t covered before proceeding.
Extreme Risk Protection Orders
More than 20 states have enacted extreme risk protection order laws, sometimes called red flag laws. An ERPO respondent is barred from buying a firearm for the duration of the order, which can last up to a year. You have no direct way to check whether a buyer is subject to one unless a background check runs through NICS, which is another reason those checks matter even when they feel like an inconvenience.
The Steps of a Private Sale
Once you know you can sell privately and what your state requires, run the transaction carefully. This is where sellers most often get themselves in trouble.
Verify Identity, Age, and Residency
Ask for a current, government-issued photo ID such as a driver’s license or state ID card. You’re confirming three things at once: who the buyer is, whether they meet the applicable age minimum, and whether they live in the same state as you. Federal law bars unlicensed persons from transferring a firearm to someone they know or have reasonable cause to believe lives in a different state.4Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts If the ID shows an out-of-state address, stop. That transaction has to go through a licensed dealer.
Run a Background Check When Required, or Voluntarily
If your state requires a background check for private sales, meet the buyer at a licensed dealer, have them complete the ATF Form 4473, and let the dealer run NICS. Transfer only after a “proceed” response and any applicable waiting period. Even in states that don’t require it, you can arrange a dealer-facilitated check for your own protection. The fee is usually worth it.
One point private sellers routinely get wrong: you cannot run a NICS check yourself. The system is available only to licensed dealers and law enforcement. There is no public portal, no phone line, and no app.6Federal Bureau of Investigation. Firearms Checks (NICS) If you want the buyer checked and your state doesn’t require it, an FFL is the only route.
Check the Serial Number
If you’re on the buying side, consider asking a local law enforcement agency to run the serial number against the FBI’s National Crime Information Center database, which contains records of stolen firearms.7Federal Bureau of Investigation. New Rule Provides Federal Firearms Licensees Access to FBI Records of Stolen Firearms Some departments will run it, others won’t. Licensed dealers gained access to NCIC stolen-gun records under a 2024 rule, so a dealer facilitating the transfer may be able to check for you.
Write a Bill of Sale
Federal law doesn’t require one, and most states don’t either. Write one anyway. It’s your proof that the firearm left your possession legally on a specific date. Include:
- Full names and addresses of buyer and seller
- Driver’s license or state ID numbers for both parties
- The firearm’s make, model, caliber, and serial number
- Sale price and date
- Signatures from both parties
Both sides should keep a copy. If the firearm later turns up in an investigation, that document is the single most useful thing you can produce.
Meet Somewhere Safe
Choose a public, well-lit location. Many police departments offer their parking lots or lobbies as designated safe exchange zones. Avoid meeting at either party’s home. Bring a friend if you can. If something feels off about the buyer, cancel the sale.
Selling to an Out-of-State Buyer
Federal law generally prohibits unlicensed people from transferring a firearm directly to someone who lives in a different state.4Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Meeting an out-of-state buyer in person and handing over a gun is not lawful, no matter how permissive both states are.
To complete an interstate sale legally, ship the firearm to a licensed dealer in the buyer’s state. The buyer picks it up there, completes a Form 4473, passes NICS, and complies with their home state’s laws.8Bureau of Alcohol, Tobacco, Firearms and Explosives. Federal Firearms Licensee Quick Reference and Best Practices Guide For handguns, the receiving dealer must be in the buyer’s state of residence. For long guns, federal law allows the transfer through a dealer in either state, as long as the sale complies with both states’ laws.
Shipping has its own rules. Non-licensees can ship a long gun through the U.S. Postal Service, but handguns must go through a common carrier such as UPS or FedEx, and those carriers have their own packaging, labeling, and shipping-method policies. Call the carrier before you drop off a package.
Straw Purchases
A straw purchase is a sale on behalf of someone else who is either prohibited or intends to use the firearm in a crime. Federal law makes it a standalone offense carrying up to 15 years in prison, or 25 years if the firearm is tied to terrorism or drug trafficking.9Office of the Law Revision Counsel. 18 USC 932 – Straw Purchasing of Firearms
Your exposure as the seller is real. If the buyer tells you the gun is for someone else, or a third party is clearly directing the purchase, don’t proceed. Even if the actual recipient might pass a check, the structure of the transaction alone can make you a party to a federal crime if that person turns out to be prohibited. Sell only to the person in front of you.
Keep Your Records After the Sale
Your legal exposure doesn’t automatically end when the firearm leaves your hands. If the gun is later recovered at a crime scene, tracing runs through manufacturing and dealer records and often leads to the last known legal owner. Without documentation of the sale, that’s you.
Keep the bill of sale indefinitely. There is no federal statute of limitations on murder, and firearms surface in investigations years or decades after they change hands. Some sellers also photograph the buyer’s ID with the buyer’s consent as a backup in case the paper record is lost. Recordkeeping matters, but the strongest protection is the care you take before the sale: verify identity and residency, confirm the buyer isn’t prohibited, arrange a background check when you can, and trust your read of the person across from you.