A Firearms Transaction Record, or Form 4473, is a form promulgated by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) in the United States Department of Justice that is filled out when a person purchases a firearm from a Federal Firearms License (FFL) holder (such as a gun shop).
The Form 4473 contains name, address, date of birth, government-issued photo ID, National Instant Criminal Background Check System (NICS) background check transaction number, and a short affidavit stating that the purchaser is eligible to purchase firearms under federal law. It contains make, model, or serial number on page three of the six page form. Lying on this form is a felony and can be punished by up to five years in prison in addition to fines, even if the transaction is simply denied by the NICS. Prosecutions are rare in the absence of another felony committed with the gun purchased. Of 556,496 denied transactions between FY 2008 and FY 2015, federal prosecutors prosecuted an average of under 32 cases per year, including 24 in FY 2013, 15 in FY 2014 and 20 in FY 2015.
This is how we fill out ours: (I will verify when I get inspected)