An A&D book — Acquisition and Disposition record — is a federal requirement for all FFL holders. It must log every firearm that enters your inventory (acquisition) and every firearm that leaves (disposition), regardless of how. ATF requires this record to be retained for 20 years after your FFL lapses. Failure to maintain a proper A&D book is one of the most serious violations an FFL can commit and can result in license revocation.
