The 10 Form 4473 Mistakes New FFL Dealers Make Most Often

The first ATF compliance audit a new dealer faces is often a learning experience — sometimes an expensive one. The errors that show up in first audits are remarkably consistent. Here are the ten most common Form 4473 mistakes new dealers make, and what to do differently from day one.

1. Leaving Question 27b (NICS Transaction Number) Blank

Every NICS contact produces a transaction number. It must be recorded on every form — proceeds, delays, and denials alike. This is the single most common finding in compliance audits. Make it a non-negotiable step: no form goes in the file without a number in 27b.

2. Missing Transferor Signature or Date in Section E

Section E must be completed by the dealer or authorized employee before the firearm leaves the counter. A missing signature or date in Section E means the transfer certification was never completed. It's both a violation and a sign that the form was rushed.

3. Skipping Section D Recertification

When the transfer date is different from the NICS contact date, the buyer must re-sign Section D. This is missed constantly — especially in layaway situations or when a customer picks up a firearm days after completing the paperwork.

4. Using an Outdated Form

Check the revision date on your forms. The current mandatory version is August 2023. Old forms in a drawer or stored in an e4473 system that hasn't been updated are a violation waiting to happen.

5. Accepting Expired ID

The expiration date on the buyer's ID must be recorded in Question 26a. If you're recording it, you're checking it. An expired ID is not valid for transfer purposes.

6. Blank Sub-Questions in Question 21

All sub-questions in Question 21 must be answered. There are no optional fields. A buyer who skips a question must be directed to complete it before the form goes further.

7. Not Logging Acquisitions on Day of Receipt

Bound book entries must be made promptly — typically by close of business on the day of acquisition. A pile of unlogged acquisitions sitting on a desk for a week is a compliance problem waiting for an auditor to find it.

8. Completing the Transfer After a NICS Denial

A denial means no transfer. Period. Regardless of what the buyer says about the denial being a mistake, the firearm cannot be transferred until NICS provides a proceed response.

9. Missing or Incomplete Buyer Signature and Date in Section B

The buyer must sign and date the Section B certification. Both the signature and the date are required. A signature without a date is incomplete. A date without a signature is incomplete.

10. Not Tracking Multiple Handgun Sales for 3310.4

Two or more handgun sales to the same buyer within five business days requires filing ATF Form 3310.4. New dealers frequently don't have a system for tracking this. Build the tracking process from your first day of operation — not after you get cited for missing it.