Friday I purchased a Colt LE6920 MP from Walmart and filled out my first electronic 4473. It was different but if used enough, will be just like your computer, laptop, or smart phone. As to the belief that the government is or is not keeping a record of gun sales, does having the serial number versus just knowing what you purchased make a difference? When contacting NICS for the background check, what makes you think they can't keep a record of that? I don't care if they do or not, just saying!