Most FFLs who get cited during an ATF inspection are not cutting corners. They are running busy stores, moving fast, and doing their best to keep up. But when an Industry Operations Investigator pulls your records, best effort is not the standard. Accuracy is.
The same categories of violations show up year after year. Here are the five most common, and what you can do about them.
1. Incomplete or Inaccurate Form 4473s
This has been the number one violation category for over a decade. Missing fields in Section A, addresses that do not match the ID presented, missing signatures, incorrect firearm descriptions, transposed serial numbers. Each one is a citable finding.
Build a review step into every transaction. Before running the background check, a second set of eyes should verify that Section A is complete and consistent. Electronic 4473 systems with field validation eliminate many of these errors before the form is finalized.
2. A&D Bound Book Errors and Gaps
Inspectors trace serialized firearms from the bound book to the shelf and from the shelf back to the book. Mismatches in either direction are findings. Common issues include delayed entries, incorrect serial numbers, and dispositions that were never recorded because someone planned to go back and close it out later.
Make it a rule: no firearm leaves receiving or the sales counter without the A&D entry completed first. If your bound book update is a separate step from the sale, there will always be a gap between the transaction and the record. Systems that log entries automatically as part of the workflow close that gap without relying on someone to remember.
3. Background Check Errors and Timing Violations
This is one of ATF’s bright-line revocation triggers. Common mistakes include recording the wrong NICS transaction number, failing to re-run a check when a customer picks up after 30 calendar days, and transferring on a Delay before the waiting period has passed. That 30-day miscalculation alone has resulted in revocations.
Track NICS expiration dates in your system, not in your head. If it is not documented, it did not happen as far as ATF is concerned.
4. Inventory Discrepancies
During the bi-directional serial number audit, inspectors check that every firearm on the shelf has an acquisition record and every open entry in the book has a corresponding firearm. Trade-ins placed on the rack but never acquired, gunsmithing intakes that were not logged, and unreported missing firearms all create serious findings.
Conduct regular self-audits. Reconcile physical inventory against your A&D records at least quarterly. If a firearm is missing, file ATF Form 3310.11 within 48 hours.
5. Falsifying Records (Even Accidentally)
This surprises people. If an employee fills in a blank field on a 4473 after the customer has already signed it, ATF treats that as falsification, regardless of intent. The customer certified their answers as true and correct. The FFL cannot go back and complete, change, or correct any buyer information after that certification. Dealers have lost licenses over this.
If a 4473 has an error in a buyer-completed section after signing, the correct step is to start a new form. No exceptions.
The Common Thread
None of these mistakes require bad intent. All of them happen most often when a store is busiest. The shops that avoid them consistently are built on workflows where documentation is part of the transaction, not a follow-up task.
AIM’s integrated platform ties 4473s, bound book entries, background checks, and inventory into one connected workflow, so your team gets it right during the sale, not after.
Download our Sales Sheet to see how AIM keeps your store inspection-ready every day.