To check if a gun is stolen, have its serial number run through the FBI’s National Crime Information Center (NCIC) Gun File. You can do this two ways: call your local police department’s non-emergency line, or take the firearm to a licensed dealer, who as of July 1, 2024, can search the NCIC Gun File directly.1Federal Bureau of Investigation. New Rule Provides Federal Firearms Licensees Access to FBI Records of Stolen Firearms Both methods query the same federal database that catches stolen firearms reported anywhere in the country. Third-party websites do not have this access and cannot give you a reliable answer.
What You Need Before You Check
Every stolen gun check runs on the serial number. That’s the unique identifier the manufacturer stamped into the firearm, and it’s the only field NCIC matches on. On pistols, the number is usually engraved on the frame near the trigger guard or on the slide. On rifles and shotguns, look on the receiver. Location varies by manufacturer, so check more than one spot if you don’t see it immediately.
Also write down the make, model, caliber, and type. Law enforcement uses these to confirm an exact match and to rule out firearms with similar serial number formats. If you’re checking a gun you already own, the ATF’s Personal Firearms Record captures each of these fields. The ATF doesn’t collect or store the form; it’s for your own records.2ATF. Personal Firearms Record – ATF P 3312.8
Look at the Serial Number First
Before you run the number, examine it. A serial number that’s been tampered with is one of the strongest signs a firearm was stolen. Signs of tampering include scratches or gouges across the digits, areas ground down with a tool or sandpaper, numbers filed until barely readable, or thick paint over the engraving. Sometimes a single digit is damaged just enough to read as two different numbers.
If the serial number looks altered at all, do not buy or accept the firearm. Possessing a gun with a removed, obliterated, or altered serial number is a separate federal crime under 18 U.S.C. § 922(k), punishable by up to five years in prison and a fine.3Office of the Law Revision Counsel. 18 USC 922 You don’t need to have stolen the gun. Simply possessing it in that condition is enough for a conviction. Call your local police on their non-emergency line and let them handle it.
Three Ways to Run the Check
Call Local Law Enforcement
The simplest route is calling your local police department or sheriff’s office on their non-emergency line. Tell whoever answers that you want to verify whether a firearm’s serial number has been reported stolen. They’ll run it through NCIC and give you the result. The service is typically free and takes a few minutes. Don’t bring the firearm to the station unless the officer specifically asks you to.
Go Through a Licensed Dealer
Any federal firearms licensee (FFL) can now check whether a firearm has been reported stolen by searching the NCIC Gun File.4Federal Bureau of Investigation. NCIC Gun File Correspondence This is particularly useful for private sales, where you want the gun verified before you hand over money. The dealer submits the serial number, and NCIC returns either a match or a “no record” response. Many dealers charge an administrative fee, often in the range of $25 to $75, though fees vary. If the FFL also handles the transfer and background check for the sale, the fee is usually higher.
Skip the Third-Party Websites
Several private sites claim to check whether a gun is stolen. None of them have direct access to NCIC. They rely on user-submitted reports, publicly available theft data, or incomplete datasets. A clean result from one of these sites doesn’t mean the gun isn’t stolen; it means their limited records don’t show a match. Treat them as informational at best, and never as a substitute for an official NCIC check.
Why NCIC Is the Only Database That Matters
When a firearm is reported stolen anywhere in the country, the report goes into the FBI’s NCIC Gun File. Every law enforcement agency in the United States uses this database. When an officer or authorized FFL runs a serial number, the system returns either a match to a stolen gun record or a “no record” response. That’s why going through police or a licensed dealer produces a reliable answer while a Google-first approach does not.
Until recently, only law enforcement could query NCIC. A rule that took effect on July 1, 2024, under the Bipartisan Safer Communities Act, opened the NCIC Gun File to FFLs on a voluntary basis so they can check whether firearms offered for sale have been reported stolen before adding them to inventory.1Federal Bureau of Investigation. New Rule Provides Federal Firearms Licensees Access to FBI Records of Stolen Firearms That expansion is why a dealer check is now a real option, not just a police one.
If the Gun Comes Back Stolen
Cooperate immediately. You’ll need to surrender the firearm to law enforcement. When you hand it over, ask for a written receipt itemizing the gun by serial number, make, model, and any other identifying details. That receipt is your proof that you voluntarily turned it in, which matters if questions come up later about how you got it.
Give the officer every detail you can about the purchase: who sold it to you, when and where, how much you paid, and any messages you have (texts, emails, online listings). This helps investigators trace the firearm and pursue whoever stole it. Being transparent also demonstrates you weren’t knowingly involved, which is the central question in whether you face charges.
If you paid for the gun, you are almost certainly not getting it back. The firearm is evidence and will eventually be returned to its rightful owner. Your recourse for the money is against the person who sold it to you.
Penalties for Getting It Wrong
Federal law makes it illegal to receive, possess, conceal, store, or sell any stolen firearm if you know or have reasonable cause to believe it was stolen.3Office of the Law Revision Counsel. 18 USC 922 “Reasonable cause to believe” is where people get caught. You don’t need actual knowledge. If the circumstances would have made a reasonable person suspicious and you didn’t check, prosecutors can argue you had reasonable cause.
The penalties are serious. Possessing a stolen firearm under 18 U.S.C. § 922(j) carries up to ten years in federal prison and a fine. Transporting one across state lines under § 922(i) carries the same maximum. Possessing a firearm with an obliterated serial number under § 922(k) carries up to five years.5Office of the Law Revision Counsel. 18 USC 924 – Penalties These are federal charges that apply regardless of state, and they can stack on top of state charges.
Practically: buying a firearm at a suspiciously low price, from a stranger in a parking lot, or under any circumstance that would make a reasonable person question its origin creates real legal exposure. Running the serial number in advance eliminates that risk.
Extra Steps for Private Sales
Private sales are where stolen firearms most often change hands, because the checks that happen at a dealer’s counter don’t happen automatically between two private parties. Federal law does not require private sellers to keep records of the transfer, and many states don’t require a background check for a sale between two unlicensed individuals.6ATF. Best Practices: Transfers of Firearms by Private Sellers The burden falls on you.
Before you pay, run the serial number through police or an FFL. Then create a bill of sale that both parties sign, listing the full names and addresses of buyer and seller, the date, the price, and the firearm’s make, model, serial number, caliber, and type. If the gun later turns out to be stolen despite a clean check, the bill of sale establishes who sold it to you and when.
You can also ask the seller to route the whole transfer through a licensed dealer. The FFL handles the paperwork, runs a background check on the buyer using ATF Form 4473, and can check the NCIC Gun File at the same time.7ATF. Firearms Transaction Record – ATF Form 4473 Some states require this for all private sales. Where it’s optional, it’s still the cleanest way to document the transaction.