The errors that show up in ATF Reports of Violations — section by section, with exactly how to avoid each one. This isn’t a theoretical list. These are the violations that get dealers written up.
Form 4473 violations are the most common finding in ATF compliance inspections — by a wide margin. Most of these errors are not the result of dealers trying to cut corners. They are the result of busy counter environments, inadequate training, and the absence of a systematic review process. Every error on this list is preventable. Every error on this list has appeared in real ATF Reports of Violations.
Technical vs. Substantive Violations: Errors marked Substantive go to the core of the transfer process and carry heavier enforcement weight. Errors marked Technical are procedural but still citable. Both types appear in Reports of Violations and both contribute to patterns that ATF documents formally.
The buyer’s government-issued photo ID information must be recorded in Section A: the type of ID, the ID number, the state or issuing authority, and the expiration date. Dealers frequently record the ID type and number but omit the expiration date or the issuing authority.
The address recorded in Section A must be the buyer’s current residence address — not a P.O. Box, not a business address, not an address that differs from what their ID shows without supporting documentation. When a buyer’s ID shows an outdated address, dealers sometimes record the ID address without asking for a current address document, or leave the address field incomplete.
Form 4473 requires the buyer’s county of residence. This field is consistently overlooked because it is not on government-issued IDs — the dealer must ask the buyer to provide it. Many dealers either skip it entirely or don’t realize it’s required.
Every question in Section B must be answered — yes or no. No question may be left blank. This is the most serious of the common errors because it goes to the core purpose of the form: documenting the buyer’s certification of eligibility. A single blank eligibility question means the buyer did not certify their eligibility on that question, which means the transfer should not have been completed.
Some buyers answer Section B questions with question marks, “N/A,” “maybe,” or other non-yes/no responses. These ambiguous answers are treated as incomplete answers — which means the transfer should not proceed. Dealers who accept ambiguous answers and complete the transfer anyway are committing a substantive violation.
A buyer who answers “yes” to a prohibited person question in Section B has self-identified as prohibited. Completing the transfer anyway — or missing the “yes” answer during intake — is a serious substantive violation. This happens more often than dealers expect, particularly when buyers misunderstand questions or answer carelessly.
The buyer’s signature in Section C is not optional. It certifies that the buyer read the form, understood the questions, and that their answers are true and correct. A missing signature means the buyer never actually certified anything — the form is incomplete and the transfer should not have occurred.
The date in Section C must be the date of transfer — when the buyer actually takes possession of the firearm. It is not the date the form was started, not the date of the NICS check, and not the date of purchase if those dates differ from the transfer date. On layaways, delayed transfers, and NFA transfers, this distinction is particularly important.
The NICS Transaction Number (NTN) must be recorded in Section D. This is the documentation that a background check was actually conducted. A missing NTN means there is no documented evidence that a NICS check occurred — which, from ATF’s perspective, is functionally equivalent to no NICS check having been conducted.
Completing a transfer while NICS shows “delayed” — before either a proceed response or the expiration of the three-business-day default proceed period — is a substantive violation. This happens when dealers transfer on the wrong day during a delay, miscalculate the three-business-day period, or confuse calendar days with business days.
When NICS returns a delay, the delay response, the date and time received, and the NTN must all be documented in Section D. Dealers frequently record the eventual proceed result but fail to document the initial delay, creating an incomplete record of the background check process.
The transfer date in Section D must reflect when the firearm was actually transferred to the buyer. This date must not precede the NICS proceed date. Dealers sometimes record the wrong date, leave the field blank, or record the sale date when the actual transfer date was different.
The dealer or employee who conducted the transfer must sign and date Section E. Missing signatures and missing or incorrect dates in Section E are among the most commonly cited violations across all ATF inspection reports. This error is entirely on the dealer side — the buyer has nothing to do with Section E.
The firearm description in Section E — make, model, caliber, type, serial number — must match the bound book disposal entry exactly. When they don’t match, ATF cites it as a violation on both the Form 4473 and the bound book. Transposed serial numbers, model abbreviations that differ between the two documents, and caliber descriptions that vary are all citable.
The firearm type field in Section E requires the correct ATF classification: pistol, revolver, rifle, shotgun, or receiver/frame. Errors here include recording “handgun” instead of “pistol,” recording the type incorrectly for AR-platform pistols, or leaving the field blank on complicated items like pistol-caliber carbines.
White-out, correction tape, or any substance that obliterates an original entry on a Form 4473 is prohibited. The form is a federal document and original entries must remain legible. ATF specifically looks for obliterated entries during inspections because they suggest the form may have been altered after the fact.
A Form 4473 that was started but not completed — due to a NICS denial, a buyer who changed their mind, or an uncorrectable error — must be voided and retained for the standard 20-year period. Destroying voided forms, or simply throwing them away because the transfer didn’t happen, is a compliance violation.
ATF revises Form 4473 periodically. Using an outdated version after a new version has been issued is a compliance violation. The current version is ATF Form 4473 (5300.9) Revised August 2023. Dealers who have been using the same stack of forms for years may unknowingly be using superseded versions.
When a buyer purchases two or more handguns from the same FFL within five consecutive business days, ATF Form 3310.4 must be filed with ATF and the relevant state agency within one business day of the qualifying transaction. High-volume dealers frequently miss 3310.4 triggers, particularly when the qualifying sales occur across different employees or different days.
This is not a single error — it is the condition that allows all 19 errors above to accumulate undetected. A dealer with no systematic process for reviewing completed Form 4473s before they are filed will consistently miss errors that a 30-second post-transaction check would catch. By the time ATF finds those errors, they are already documented in a formal Report of Violations.
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