Quote Originally Posted by OneGuy67 View Post
The serial number of the firearm is not run by the FFL when conducting a background check. It isn't even relayed to CBI as part of the check. It is usually annotated on the 4473 after the completion of the check.
Up here in NOCO, two of the FFL's I use for transfers do check to see if the private party transfer firearms are stolen. They record the SN for their bookkeeping and they check to see it they are reported stolen. I don't know how they check but the employees tell me they check every gun.