Go back to the store where you bought it.
Go to the seller where you purchased the gun.
Yes, it is possible as long as it is a registered gun that was obtained legally.
You find a published list of serial numbers for the maker.
Contact police, provide them with the information you DO have. See if you can contact the person you bought the gun from, and if they have a record. Next time, record serial numbers, keep them in a safe place, along with photos.
You can't
You can't- unless you are a law enforcement officer. However, if you are concerned that a gun you are considering buying may be stolen, see if your local law enforcement will run the serial number for you.
Contact your local police department and give them the serial number. The Police can check on the stolen gun list maintained by the BATFE. If the gun is stolen, the Police will conficate the piece and begin investigation of how it was acquired.
That's not information which can be readily looked up, not to mention that serial numbers are not unique to one firearm - a make and model would be needed, as well.
For date made, try Proofhouse.com or maker's website. To see if stolen, contact your local police.
Was thinking of buying a used firearm to defend my home from invasion. But how do I know if its stolen? Call your local police department and have them check it in NCIC. You may have to bring it in so they can confiscate it if it is stolen.
No way to answer. Sorry.