ATF rulings are interpretive documents the Bureau of Alcohol, Tobacco, Firearms, and Explosives publishes to explain how it reads and applies the federal statutes it enforces. They are not regulations, and they do not carry the force of law on their own. They are the agency’s official position on a specific legal or technical question, used by licensed dealers, importers, manufacturers, and their attorneys to know what the ATF expects. The most recent are ATF Ruling 2025-1 and ATF Ruling 2025-2, both published on June 24, 2025, which reversed longstanding import restrictions on dual-use firearm barrels and on non-lethal training cartridges.
How a Ruling Differs From a Regulation
Federal agencies produce two very different kinds of written guidance, and the distinction matters.
Legislative rules are formal regulations. The ATF drafts them, publishes a Notice of Proposed Rulemaking in the Federal Register, accepts public comments for at least 30 days under Section 553 of the Administrative Procedure Act, and then issues a final rule that is codified in Title 27 of the Code of Federal Regulations. Those rules carry the force of law.
Rulings are interpretive rules. Under the APA, interpretive rules are exempt from notice-and-comment and do not create binding legal obligations in the same way a codified regulation does. The Administrative Conference of the United States has described them as documents that “advise the public of the agency’s construction of the statutes and rules which it administers.” Noncompliance with an interpretive rule should not, by itself, form the basis for enforcement action against a member of the public.
In practice, though, rulings matter. They are the agency’s published, official reading, and industry treats them accordingly. The ATF can issue, revise, or supersede a ruling without a comment period. When Ruling 2025-1 came out, it simply declared a 2005 ATF Open Letter superseded. No public comment was taken, and none was required. The agency later proposed a formal regulation to codify the same principle for barrels, frames, and receivers, and that proposal went through the standard notice-and-comment process.
Ruling 2025-1: Dual-Use Barrels
Ruling 2025-1 addresses a question that had frustrated importers for two decades: whether a firearm barrel previously installed on a non-sporting, military surplus, or National Firearms Act weapon overseas can be imported into the United States.
A 2005 ATF Open Letter had effectively said no. It tied a barrel’s import eligibility to the firearm it came from rather than to how it could be used domestically. A barrel that had once sat on a surplus military rifle was treated as permanently tainted, even if it could be installed on a perfectly legal sporting firearm.
Ruling 2025-1 reverses that position. A dual-use barrel may now be imported as long as there is an identified sporting firearm configuration for the barrel at the time of import. The barrel’s history overseas is irrelevant. Once in the country, the barrel can be used to build a sporting firearm, a non-sporting firearm, or an NFA firearm, provided the builder complies with the relevant assembly and registration laws. Importers must identify the barrels as “dual-use” on their ATF Form 6 applications and note compliance with assembly restrictions for semiautomatic rifles and shotguns.
Ruling 2025-2: Non-Lethal Training Rounds
Ruling 2025-2 addresses non-lethal marking cartridges, sometimes called “simunition” rounds, used in law enforcement and military training. These are low-energy rounds designed to leave paint marks on targets or trainees. They fire only from specially adapted training guns or conversion kits and cannot cycle the action of a standard firearm.
The ATF concluded that these rounds do not meet the Gun Control Act’s definition of “ammunition” because they are not “designed for use in any firearm.” The training devices that fire them are not firearms under federal law either, since they are not instruments of offensive or defensive combat. The agency drew that standard from the Supreme Court’s reasoning in Bondi v. VanDerStok.
The practical consequence is that importers no longer need to submit an ATF Form 6 to bring qualifying training rounds into the country. The ruling does not extend to less-than-lethal ammunition like bean bag rounds or rubber projectiles used for riot control. Those remain regulated.
How Much Weight Courts Give ATF Rulings
Because rulings are interpretive rather than legislative, courts are not required to accept them. How much weight a court gives depends on the doctrine that applies.
Under Skidmore v. Swift & Co., a court considers the thoroughness of the agency’s reasoning, its consistency over time, and its overall persuasiveness. In limited circumstances involving genuinely ambiguous regulatory language, a court might extend greater deference under the framework described in Kisor v. Wilkie.
The general direction, though, has been toward less deference. In 2024, the Supreme Court decided Loper Bright Enterprises v. Raimondo, which overruled the longstanding Chevron doctrine that had required courts to defer to reasonable agency readings of ambiguous statutes. Courts now interpret the statutes the ATF administers independently rather than deferring to the agency’s reading when the text is unclear. That shift affects both rulings and formal regulations, and it means an ATF ruling is more vulnerable to judicial second-guessing than it would have been a few years ago.
Two other recent decisions illustrate how courts have reshaped the boundaries of ATF authority. In Garland v. Cargill (2024), the Supreme Court held that semiautomatic rifles equipped with bump stocks do not qualify as machine guns under the National Firearms Act, forcing the ATF to remove the regulatory language that had classified them that way. In Bondi v. VanDerStok (March 2025), the Court upheld the ATF’s 2022 rule requiring serialization and background checks for ghost gun kits and unfinished frames or receivers, holding 7-2 that certain weapon parts kits qualify as “firearms” under the Gun Control Act because they can be readily converted into functional weapons. Justice Gorsuch wrote the majority opinion; Justices Thomas and Alito dissented. The decision left open the possibility that some kits too incomplete or difficult to assemble might fall outside the rule’s reach.
Rulings Are Not the Same as the 2025–2026 Reform Package
Rulings 2025-1 and 2025-2 came out during a much larger regulatory effort, and the two tracks are easy to confuse.
On February 7, 2025, President Trump signed an executive order directing the Attorney General to review agency orders, regulations, guidance documents, and actions from January 2021 through January 2025 that may have infringed on Second Amendment rights. The ATF’s response, announced on April 29, 2026, was a package of 34 notices of final and proposed rulemaking that Acting Attorney General Todd Blanche and ATF Director Robert Cekada described as the most significant regulatory reform in the agency’s history. That package proposes to rescind the 2023 stabilizing brace rule, the 2024 “engaged in the business” rule, and the bump stock regulation, and it proposes modernizations to Form 4473, electronic recordkeeping, records retention periods, and various NFA procedures.
Almost all of those items are proposed regulations moving through notice-and-comment rulemaking, not rulings. They will be codified in the Code of Federal Regulations if finalized. A small number were issued as final rules without a comment period under the APA’s “good cause” exception for technical or non-substantive changes, but most of the 34 items carry comment windows, several of them 90 days.
The upshot: if you are looking for the ATF’s current position on a specific legal question and the agency has issued a ruling on it, that ruling is where the position lives until the agency withdraws it or a court sets it aside. If you are looking for a binding rule with the force of law, look to the regulations in Title 27 of the CFR, not to the rulings.