ATF Form 1 Rule Change: What the “Conforming” Update Means
In early May 2026, the Bureau of Alcohol, Tobacco, Firearms and Explosives published a final rule that received little mainstream attention but quickly drew scrutiny from Second Amendment advocates and content creators. Titled “Conforming Change for Approving a Making Application” (ATF No. 2025R-21F, RIN 1140-AA79), the rule amended 27 CFR 479.64 to explicitly require a National Instant Criminal Background Check System (NICS) check as part of processing ATF Form 1 applications. The ATF change may be referenced here.
Form 1 is the application individuals or entities use to make and register National Firearms Act (NFA) firearms—most commonly suppressors, short-barreled rifles (SBRs), short-barreled shotguns, and “any other weapons.” The change took effect immediately on May 6, 2026. ATF described it as a technical, conforming update that simply wrote longstanding practice into the regulations so they match both the statute and the parallel rules for Form 4 transfers.
Critics and analysts, including those covering the rule in detail, have asked whether the move is pure housekeeping or part of a broader effort by the agency to shore up its regulatory framework after years of courtroom setbacks.
Background: Form 1, the NFA, and Statutory Requirements
Under the National Firearms Act, no one may make an NFA firearm without first filing an application and receiving ATF approval. The governing statute, 26 U.S.C. 5822, requires that applications be denied if making or possessing the firearm would place the applicant in violation of law. Parallel language appears in 26 U.S.C. 5812 for transfers.
For decades ATF has run NICS checks on both Form 1 (making) and Form 4 (transfer) applicants. The regulation governing Form 4 transfers (27 CFR 479.86) already stated explicitly that the Director “shall contact the National Instant Criminal Background Check System” in addition to any other records checks. The regulation governing Form 1 applications (the pre-amendment version of 27 CFR 479.64) contained no comparable explicit reference to NICS, even though the statute demanded denial of unlawful applications and ATF performed the checks in practice.
The May 2026 final rule closed that gap. It amended § 479.64 to add language paralleling the Form 4 provision: an application must be denied if making or possessing the firearm would place the maker in violation of law, and to make that determination the Director must contact NICS. The rule also made minor technical edits for plain writing, form references, and the authority citation for Part 479.
ATF stated that the amendment imposes no new obligations on the public, creates no additional compliance costs, and simply reflects existing practice. Because the agency classified it as a rule of agency procedure or practice rather than a substantive change affecting public rights or duties, it claimed exemption from the normal notice-and-comment requirements and delayed effective date under the Administrative Procedure Act.
What Actually Changed for Applicants
For the typical Form 1 filer—someone building a suppressor, converting a rifle to an SBR, or making another NFA item—the practical process remains largely the same. Applicants still submit the form (increasingly via eForms), fingerprints where required, photographs or photo ID, and the applicable tax (now $0 for most items other than machine guns and destructive devices under the 2025 statutory change). ATF continues to run the NICS check it has long performed.
The regulatory text now mirrors the Form 4 standard. That consistency eliminates one potential argument that the agency’s internal procedures for making applications were incomplete relative to the statute or to the transfer rules. The updated regulation now reads, in substance, that the Director will consider the application and, in addition to other records checks, must contact NICS to determine whether the applicant would be violating the law by making or possessing the firearm.
ATF has emphasized that processing times for high-volume NFA forms have improved significantly in recent years even as application volume has risen, but this particular rule does not alter timelines, fees, or documentation requirements beyond the explicit NICS reference.
Why the Agency Made the Change Now
The official explanation is straightforward: consistency with the statute and with existing Form 4 language, plus reflection of longstanding operational practice. The broader context, however, includes years of litigation challenging ATF rulemaking. Courts have scrutinized agency interpretations on pistol braces, bump stocks, frames and receivers, “engaged in the business” definitions, and other topics. The Supreme Court’s decision in Loper Bright Enterprises v. Raimondo (2024) ended Chevron deference, making courts less inclined to defer to agency readings of ambiguous statutes and increasing pressure on agencies to ensure their regulations track statutory text closely.
In that environment, “quiet” conforming amendments serve a defensive purpose. By aligning the Form 1 regulation with both the statute’s denial requirement and the already-explicit Form 4 NICS language, ATF reduces the risk that a future challenger could argue the agency lacked clear regulatory authority for a step it was already taking. Analysts covering the rule have described it as the agency cleaning up internal inconsistencies and removing potential legal weak points before they can be exploited in court.
The rule was issued as part of a larger package of May 2026 regulatory actions under the current administration’s broader review of firearms regulations. While some of those actions involved proposed rescissions or burden reductions, this particular change is procedural and clarifying rather than deregulatory in nature.
Implications for Gun Owners and NFA Applicants
Law-abiding applicants who pass a background check experience no material change. The NICS check was already occurring; it is now written into the regulation in the same terms used for transfers. Prohibited persons remain barred, as the statute has always required.
The change does reinforce that Form 1 approval is not automatic and that ATF retains the duty to confirm the applicant is not prohibited. It also underscores the agency’s preference for regulatory symmetry between making and transferring NFA items. In an era of frequent litigation over administrative process, explicit regulatory language can make agency actions harder to attack on procedural grounds.
For those following NFA policy more broadly, the episode is a reminder that seemingly technical Federal Register notices can reveal how agencies respond to judicial constraints. After multiple high-profile losses and the end of Chevron, agencies have incentives to tighten language, eliminate gaps, and document existing practices so that future challenges focus on substance rather than procedural incompleteness.
Looking Ahead
This conforming rule does not expand the universe of people who may lawfully make NFA firearms, nor does it impose new taxes, waiting periods, or marking requirements. It simply makes the regulation governing Form 1 applications say out loud what ATF has been doing for years and what the parallel Form 4 regulation already required.
Second Amendment advocates should continue monitoring both the substance of NFA policy and the administrative mechanics by which ATF implements it. Court decisions limiting agency deference, statutory tax reductions on most NFA items, and ongoing modernization of forms and processing all form part of the current landscape. Quiet conforming amendments like this one illustrate how agencies adapt their rulebooks when the judicial environment becomes less forgiving of regulatory ambiguity.
For most Form 1 applicants the day-to-day process is unchanged. The regulation, however, is now clearer, more consistent with the transfer rules, and more closely aligned with the statutory command that applications be denied when making or possessing the firearm would violate the law. That clarity serves the agency’s litigation posture even if it leaves the practical experience of lawful makers essentially the same.