My question is in regard to what the government knows about who own what guns. I have a valid reason for asking, but I'll leave that for another post. Let's just say a gun is used in the commission of a crime and somehow it gets dropped and left at the scene of the crime. The police now have the gun and therefore the serial numbers. How do they or BATFE go about finding out who the legal owner of that gun should be when the gun was sold in a state that does not have registration? From what I understand all transaction records should be destroyed with the exception of the forms that are kept at the LGS that transferred the gun to its owner. Background checks don't include information on the make, model or serial number of the gun you're buying. Obviously searching through every form at each and every LGS won't work, so how do they know?