Contact your local law enforcement. They can check to see if the serial number has been entered as a stolen item. IF there is a report, the officer will need to retain the gun to return it to the owner. They WILL need to have the gun in hand to do this, not over the phone.
Ask a police officer
Contact the police.
Check with local law enforcement.
You need a lawyer.
There are two or three, but, they are only good if the sn is listed.
Go to the seller where you purchased the gun.
Depending on where you are, a local gun shop may be able to run a stolen gun request for you. You can do that in Tennessee, *IF* your local gun shop is willing to do it. Otherwise, you will probably have to check with the local Police Department.
Contact local law enforcement. Give them the gun, and ask if they will check the NCIC data base (as a private citizen, you do not have access to that system). If the gun IS stolen, it will be confiscated by the police, and you may have to testify in a stolen property trial.
Probably not online, but any local police station can run the serial number and tell you. If it did turn up stolen, you wouldn't be in any trouble, but you would lose the gun.
I would contact the department of public service (State Troopers) or The Texas Rangers. There are also a few stolen gun posts on some of the bigger gun forums and databases
what gun are we talking about here
You can't. Contact the police if you believe it is stolen.