You sold a gun on an auction site, or your customer bought one. The metal shows up at your counter in a box, and now you are the FFL of record on a firearm you have never touched before. That box is an acquisition. It hits your bound book whether the customer picks it up tomorrow or never comes back. Get the intake wrong and you have manufactured your own inspection finding, on a gun you only handled to hand to someone else.
The online sale is just a contract. The transfer is what the ATF cares about, and the transfer runs on the same rules you already know. The trouble is that auction-site volume makes it easy to treat intake as a mailroom task instead of a recordkeeping event. It is a recordkeeping event.
The acquisition starts the clock
When the firearm arrives, it is acquired. Log it. Acquisition and disposition entries live at 27 CFR § § 478.121–478.129, and the bound book wants the make, model, type, caliber or gauge, serial number, and the source. Record the source as the shipping FFL, with their name, license number, and address, not the auction site and not the seller behind the listing. The auction platform is a marketplace, not the transferor of record.
Do not let the box sit in receiving for a week while the entry waits. The disposition-timing rule at 27 CFR § 478.125(e) gives you seven days to record a disposition once it happens, and an open or stale entry is one of the most routine findings an IOI writes up. The acquisition side has its own discipline: log it on receipt, reconcile it against the shipment, and you will never be the shop explaining a gun on the shelf that is not in the book.
Verify the shipping FFL before you accept the gun
A firearm should arrive from a licensee, not from a private seller's kitchen table. Before you log it, confirm the sender is a current FFL. You can verify a receiving or sending FFL through ATF eZ Check. Keep a copy of the shipping FFL's license on file the way you would for any FFL-to-FFL transaction. If the package came from a non-licensee who shipped you a handgun, you have a problem that started upstream, and you want to catch it at intake, not at an inspection three years later.
This is also where interstate rules quietly apply. A handgun sold to an out-of-state buyer routes FFL-to-FFL to a dealer in the buyer's state of residence under 18 U.S.C. § 922(b)(3). On the receiving end, that is you. The auction listing does not change the geography. If you are taking in handguns and long guns from buyers and sellers across state lines, the interstate transfers rules are the ones your staff needs cold.
The disposition is still a full 4473
Here is where shops talk themselves into shortcuts. The gun came from an auction the customer already won, so the staffer treats the pickup as a formality. It is not. When that customer walks in, you run a complete transaction: a full Form 4473 (ATF Form 5300.9), every Section A question answered, the NICS check, and the signatures. The recordkeeping requirements at 27 CFR § § 478.124–478.129 do not bend because money changed hands online first.
The predictable errors show up exactly here:
- A skipped or unanswered Section A question because the staffer rushed a "sold already" pickup.
- A missing signature, the single most common 4473 finding there is.
- A NICS clock miscounted, with the three-business-day default-proceed window under 18 U.S.C. § 922(t)(1)(B)(ii) treated as calendar days. Saturdays, Sundays, and federal holidays are excluded.
- An acquisition logged but the disposition left open past the seven-day window.
None of these are exotic. DealerReady's review of FFL claims finds the large majority of losses trace back to documented counter and recordkeeping errors exactly like this. Predictable means trainable.
Train the intake the same way every time
The fix is not a sign by the receiving door. It is a counter staffer who treats every auction-site arrival as two distinct, fully documented events: an acquisition when the box lands, and a disposition with a clean 4473 when the customer leaves with it. That is the work in 4473 completion and recordkeeping and in bound book management, and it is the baseline you want every person on the floor to hold.
For a sales floor that handles online-sale transfers all day, train the whole role, not one task. Counter Certified stacks the courses your counter staff actually need, and every finished course produces a dated, verifiable certificate. That certificate is the difference between "we covered that" and proof the training happened, the kind of documentation your carrier will accept and may credit at renewal.
This is the training baseline and the paper trail, not legal advice and not a substitute for the current ATF forms, instructions, and rulings. Confirm the specifics against current ATF guidance, and bring in counsel where the stakes warrant it.
If auction transfers are a steady part of your business, browse the course catalog and decide where your counter is thinnest. Train it, prove it, and stay licensed.