Dude, law enforcement, most anyway, have better things to do. Nothing In Texas law says the gun you defend yourself with lawfully needs to have its s/n ran. Your background will be ran but you’re over thinking all of this.I edited the thread title because I used the R word for lack of a better term. If a gun is used in a shooting (even a completely lawful one) the gun is subject to an FFL search and subsequent review by LE. That said if the gun was not used by the purchaser on record with the FFL does this cause any possible problems for the person who originally bought the gun then sold it private party? What about the person that used said firearm? Now put yourself in a leftist city in Texas.