ATF Form 3310.4: When You Must Report Multiple Handgun Sales (and How)

ATF Form 3310.4, the Report of Multiple Sale or Other Disposition of Pistols and Revolvers, is required whenever an FFL sells or otherwise disposes of two or more handguns to the same unlicensed buyer within five consecutive business days. It must be submitted by the close of business on the day the reporting threshold is met, and copies go to both the ATF and your local or state law enforcement agency.

The 3310.4 is one of the shortest forms in firearms retail and one of the easiest to miss. Unlike the Form 4473, which the transaction itself forces in front of you, the multiple-sale report depends on your store noticing a pattern across transactions, sometimes across different days and different employees. This guide covers exactly when the form is triggered, how to file it, and where dealers get tripped up.

What Is ATF Form 3310.4?

Form 3310.4 is the report federal law requires when a single unlicensed buyer acquires multiple handguns from you in a short window. Its purpose is trafficking detection: bulk handgun purchases are a classic straw-buying pattern, and the report gives the ATF a near-real-time signal instead of waiting for a trace request months later.

The form itself asks for information you already have: your license details, the buyer's identifying information from the Form 4473, and a line for each pistol or revolver in the sale (manufacturer, model, caliber, serial number). Filing it does not mean your buyer did anything wrong, and it triggers no action against them by itself. Not filing it, however, is a violation the ATF cites regularly.

Exactly When the Report Is Required

The trigger has four parts, and every part matters:

• Two or more pistols or revolvers. Handguns only. Rifles and shotguns are not covered by 3310.4 (a separate form, 3310.12, covers certain semiautomatic rifle sales by dealers in the four Southwest border states).
• The same unlicensed buyer. Sales to another FFL do not count. Two buyers each purchasing one handgun in the same transaction do not count.
• Within five consecutive business days. The clock starts on the day of the first sale and runs five business days, counting the first day. A handgun sold Monday and a second sold Friday of the same week triggers the report. Business days are days your state's chief law enforcement office is open, so weekends and holidays usually extend the window rather than shrink it.
• Sale or other disposition. Trades, and for a pawnbroker the return of two pawned handguns redeemed within the window, can also trigger the report. Pawn redemptions are the classic Type 02 blind spot.

One purchase of two handguns in a single transaction is the simple case. The hard case is cumulative: one handgun today, another on day four. The second disposition is what triggers the report, and it must list all the handguns acquired in the window, including the one from the earlier sale.

How and Where to File

1. Complete the form the day the threshold is met. Pull the buyer's information straight from the 4473 so the two documents match exactly.
2. Send the original to the ATF by the close of business that day. The ATF accepts electronic submission through its eForms-linked reporting channel or by fax, which beats mailing for a same-day deadline.
3. Send a copy to your designated state police or local law enforcement agency where the sale occurred, also by close of business.
4. Keep your copy for at least five years, filed where you can produce it during an ATF inspection.

The Mistakes That Actually Get Cited

Multiple-sale reporting failures show up over and over in inspection reports and revocation cases, and they cluster into five patterns:

• Missing the cumulative trigger. Two clerks, two days, one buyer, no report. Without a system-level check across transactions, nobody sees the pattern.
• Miscounting business days. Treating the window as a calendar week, or forgetting that the day of the first sale counts.
• Filing late. The deadline is close of business the day of the triggering sale, not end of week.
• Forgetting the second copy. The ATF copy goes out but the state or local copy never does. Both are required.
• Skipping pawn redemptions. A pawnbroker returning two handguns to the same customer inside the window owes a report, the same as a sale.

Repeat 3310.4 failures are treated as willful violations, and willful violations are what revocations are built on. Under the ATF's current enforcement posture, a missed multiple-sale report is one of the violation categories that can send a license straight to revocation review, alongside 4473 falsification and transfer-without-NICS findings. The rest of that landscape is covered in our guide to the most common ATF compliance violations.

Making the Trigger Impossible to Miss

The fix for the cumulative-sale blind spot is not a better memory; it is software that watches every disposition against the last five business days automatically. When your point of sale system logs each handgun disposition against the buyer's profile, the second qualifying sale can flag the 3310.4 requirement at the counter, prefill the form from the 4473 data it already holds, and keep the filed copy attached to the transaction record. That is exactly how Bravo handles it: the same platform that runs your electronic 4473 and A&D book tracks multi-handgun dispositions per buyer, so the report happens on time with the paperwork already matching.

If you filled out the form by hand last time and want a refresher on the line-by-line basics, our earlier post on filling out ATF Form 3310 still applies; this guide supersedes it on the trigger rules and filing deadlines.

Related reading: how to prepare for an ATF inspection and the compliance guide library.