is provided to the public, including major retailers, free of charge via the ATF eForm web site. ATF eForm 4473 is a downloadable application that runs locally on the seller's computer and supports both Windows and Mac OS X operating systems. (See "External links" section below.) Acquisition and Disposition Log The firearm dealer is required to record some information from the Form 4473 into a "bound-book", called an "Acquisition and Disposition Log”. The dealer must keep the Form 4473 on file for the lifetime of the FFL, and is required to surrender the log book to the ATF upon retirement from the firearms business. The ATF is allowed to inspect, as well as request a copy of, the Form 4473 from the dealer during the course of a criminal investigation. In addition, the sale of two or more handguns to a person in a five-day period must be reported to the ATF on Form 3310.4. Revisions 2016 In 2016, the ATF made several changes to the form, including adding a warning statement that the use of marijuana is illegal under federal law, regardless of whether it has been legalized or decriminalized for medicinal or recreational purposes in the state where the transferee/buyer resides. 2020 In 2020, the ATF made further changes to the form, including adding a warning that "any person who exports a firearm without a proper authorization from either the Department of Commerce or the Department of State, as applicable, is subject to a fine of not more than $1,000,000 and up to 20 years imprisonment." As of November 1, 2020, all FFL holders were required to transition to the new revision. Additional changes made to the form include: Relocating questions relating to the manufacturer, importer, model, serial number, type, caliber or gauge, and number of firearms to be transferred to a new Section A at the beginning of the form. These questions were previously located in Section D. New options for questions relating to personal information, such as the option to select Non-binary as a Sex, the option to include an Appeals Management Database Identification (AMD ID) as a Unique Personal Identification Number, and two new immigration-based questions. Additional criminal history questions, relating to dealings with a military court, misdemeanor domestic violence offenses, and orders of protection. Convictions According to the US Sentencing Commission, approximately 5,000 to 6,000 people a year are convicted of receiving or possessing