How to Conduct Your Own FFL Internal Audit

The most effective way to pass an ATF compliance inspection is to have already reviewed your records yourself. A systematic internal audit catches problems while you still have time to understand and correct them — rather than having an IOI hand you a Report of Violations that immediately escalates your enforcement exposure.

What to Audit and How Often

At minimum, every FFL should conduct a meaningful review of their records at least quarterly. High-volume dealers — anyone processing more than a few hundred transfers per year — should audit monthly. The review should cover three areas: Form 4473 completeness and accuracy, bound book (A&D) accuracy and currency, and physical inventory reconciliation.

Auditing Your Form 4473s

Pull a sample of recent 4473s — at minimum the last 30 days, ideally the last 90. Work through each form systematically using the ATF instructions for Form 4473 as your checklist. The most common errors to look for are:

• Missing or incomplete buyer signatures and initials (Sections A and C)
• Missing transferor signature or date in Section E
• Incomplete or missing NICS transaction number in Section D
• Firearm description errors — incorrect make, model, caliber, or serial number
• Missing or incorrect transfer date
• Unanswered or incorrectly answered questions in Section B
• Missing or incorrect ID information in Section A

Auditing Your Bound Book

The A&D bound book needs to be current — every acquisition and every disposition entered within the timeframe required by regulation. Review for missing entries, incomplete entries (especially missing serial numbers or acquisition dates), and dispositions without corresponding 4473s. Check that the format meets ATF requirements for your license type.

Physical Inventory Reconciliation

Count your on-hand inventory and reconcile it against your bound book. Every firearm currently in your possession should appear as an acquisition with no corresponding disposal. Every firearm that appears as acquired but not disposed should be physically present. Discrepancies need to be investigated and documented — they may represent data entry errors, or they may indicate a more serious problem.

Documenting Your Audit

The audit is only useful if you document it. Record the date of the audit, the scope of what you reviewed, what errors you found, and what corrective action you took. This documentation serves two purposes: it creates accountability for your own process, and it provides evidence to ATF that you conduct active compliance oversight — which is a meaningful mitigating factor in any enforcement proceeding.

What to Do With Errors You Find

Errors on 4473s that are still in your possession can often be corrected per ATF guidance — the original error is lined through, the correction is made, and the change is initialed and dated by the person making the correction. Do not use correction fluid or obliterate the original entry. Document what was corrected and why. Some errors cannot be corrected after the fact — missing buyer signatures, for example, cannot be added after the transaction is complete.