To check if a gun is stolen, you need its serial number run against the FBI’s National Crime Information Center (NCIC), and only two people can do that for you: a local law enforcement officer or, since August 2025, a licensed firearms dealer with access to the NCIC Stolen Gun File. There is no public database you can search yourself. The NCIC logged over 200,000 stolen firearms in a single year, so if you’re buying from a private seller, running the number before money changes hands is worth the small amount of effort it takes.
Get the Serial Number First
Every check starts with the serial number. It’s the unique identifier stamped into the frame, slide, or receiver by the manufacturer, and it’s how law enforcement databases are indexed. Without it, no meaningful check is possible.
Ask the seller for the serial number before you meet, so you can have it checked in advance. Get the make (Glock, Ruger, and so on) and model too. Those help confirm the serial number actually matches the firearm in front of you. If the number a seller gives you doesn’t correspond to the make and model when you inspect the gun, walk away.
Missing or Altered Serial Numbers
If the serial number has been scratched off, filed down, or otherwise tampered with, do not buy the firearm. Possessing a gun with a removed or obliterated serial number is a federal felony punishable by up to five years in prison and a fine.1Office of the Law Revision Counsel. 18 USC 924 Penalties Report it to local law enforcement instead.
Ask Local Law Enforcement to Run It
Your local police department or sheriff’s office is the most direct route. Officers have around-the-clock access to NCIC, which includes a dedicated Stolen Gun File covering firearms reported stolen and recovered guns whose ownership hasn’t been established. Private citizens cannot query this database themselves; every request has to come through a law enforcement agency.2FBI Information Systems. National Crime Information Center (NCIC)
Call the non-emergency line for your local agency and say you’d like to verify whether a firearm has been reported stolen. Have the serial number, make, and model ready. Some departments will handle it over the phone; others may ask you to come in. Don’t bring the firearm itself unless the officer specifically tells you to.
The check is usually quick and free. Departments are used to these inquiries and treat them as routine. Running the number before you buy also signals good faith, which matters if the gun’s history is ever questioned later.
Ask a Licensed Dealer to Run It
As of August 4, 2025, federal firearms licensees (FFLs) have their own path into the NCIC Stolen Gun File through the FBI’s NICS E-Check application. An interim final rule signed in June 2024 gave dealers voluntary access, and the FBI rolled out final implementation that August.3Federal Bureau of Investigation. NCIC Gun File Correspondence 2025
The practical implication for you: if you’re buying through a dealer, ask whether they run stolen-gun checks as part of their intake. Not every FFL has opted in, but many have. Dealers are authorized to use this tool only for firearms they may take into inventory, so it works when you’re buying through the dealer, not when you’re asking them to check a random serial number as a favor.3Federal Bureau of Investigation. NCIC Gun File Correspondence 2025
Why You Can’t Check It Yourself
There’s no official government tool that lets a member of the public search a serial number. NCIC is restricted to authorized criminal justice officials, and the ATF’s tracing tools, including eTrace and the National Tracing Center, are for law enforcement conducting criminal investigations only.4ATF. Fact Sheet – eTrace Internet-Based Firearms Tracing and Analysis The ATF has stated that its National Tracing Center cannot provide firearms records to the general public.5ATF. Records Search Requests Program
You may find unofficial websites that claim to search stolen gun serial numbers. Be skeptical. They typically rely on user-submitted reports rather than law enforcement data, so their records are incomplete and unverified. A “clean” result from one of those sites means very little. The only check that carries weight is one run against NCIC through law enforcement or a licensed dealer.
What a Clean Result Actually Tells You
Even an official NCIC check has limits. The database contains only firearms that have been reported stolen to a law enforcement agency and entered into the system. A gun stolen last week may not be in there yet if the owner hasn’t filed a report or the agency hasn’t finished the entry. NCIC policy calls for stolen gun records to be entered “as soon as possible,” but real-world processing times vary.
There’s also the gap left by owners who never realize a firearm is missing, or who don’t report it. A clean NCIC result means no agency has flagged that serial number. It doesn’t guarantee a spotless history. That’s why documentation matters so much in a private sale.
Protecting Yourself in a Private Sale
Most people asking whether a gun is stolen are buying from a private seller, with no federally required background check in many states and no dealer in the middle. A stolen-gun check is one layer of protection. It shouldn’t be the only one.
Write a bill of sale for every private firearm transaction. It should include:
- Full names and addresses of both buyer and seller
- Firearm details: make, model, serial number, and caliber
- Date and price of the sale
- Signatures from both parties
A bill of sale won’t stop you from accidentally buying a stolen gun, but it creates a paper trail showing who sold it to you and when. If the firearm later turns up flagged as stolen, that document is your evidence you bought it in good faith from a specific person. Without it, you’re trying to explain a stolen gun in your possession with no proof of how you got there. Some states also have additional requirements for private transfers, so check your local laws before completing a sale.
If the Gun Comes Back Stolen
If a check confirms the firearm is stolen, cooperate immediately with the agency that ran it. The gun will be taken as evidence and eventually returned to its rightful owner. You will not get it back, even if you paid for it. That loss falls on you, which is another reason to run the check before the sale rather than after.
Expect questions about how you acquired the firearm: who sold it to you, when, where, and how much you paid. This is where the bill of sale earns its keep. Truthful, detailed information helps investigators and shows you weren’t involved in the theft. Officers are generally trying to recover the gun and trace it back to whoever stole it, not to prosecute someone who unknowingly bought it and came forward.
What you should not do is keep the gun after learning it’s stolen. Federal law makes it a felony to possess, receive, conceal, store, sell, or transport a stolen firearm that has moved across state lines when you know or have reasonable cause to believe it was stolen, with penalties of up to 10 years in federal prison and a fine.6Office of the Law Revision Counsel. 18 US Code 922 – Unlawful Acts1Office of the Law Revision Counsel. 18 USC 924 Penalties Once you know a firearm is stolen and hold onto it anyway, you’ve crossed from unfortunate buyer into federal felony territory. Surrender the firearm, answer questions honestly, and consult an attorney if you have any concern about your own exposure.