ATF Pistol Brace Rule Just Got SHUT DOWN!
August 4, 2025
On July 17, 2025, a breakthrough occurred in the ongoing legal battle between gun owners and the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF). The government officially dismissed its appeal in Mock v. Bondi (formerly Mock v. Garland), ending the agency’s effort to enforce its pistol brace rule. Criminal defense attorney Rachel Moss discusses the victory for plaintiffs and Second Amendment supporters, as well as the importance of constitutional due process.
“With this ruling, we now know that the pistol brace rule from the ATF will remain vacated.”
– Attorney Moss
Understanding the Pistol Brace Rule
The ATF’s pistol brace rule aimed to reclassify many firearms with pistol braces as short, barreled rifles (SBRs) under the National Firearms Act (NFA). This change would have forced thousands of legal gun owners to face strict federal regulations, including mandatory registration and possible criminal charges. This change had sweeping implications because SBRs are subject to increased regulation, including a $200 tax stamp and approval from the ATF.
The Legal Challenge and Summary Judgment
In June 2024, the U.S. District Court for the Northern District of Texas granted summary judgment in favor of the plaintiffs. A motion for summary judgment is a request for the court to decide a case without a full trial, based on the undisputed facts of the case. The court agreed with the plaintiffs that the ATF failed to follow the Administrative Procedure Act (APA) when promulgating the rule.
“ATF failed to follow the proper procedures in putting this rule into place.”
– Attorney Moss
Case Dismissal and Legal Implications
The recent stipulation of dismissal means that the ATF’s appeal has been voluntarily withdrawn, and the district court’s judgment vacating the rule will remain in effect. However, the court did not enter a permanent injunction. This means the ATF could potentially attempt another version in the future, if it follows proper procedures. Attorney Moss notes that any future rule would be subject to the same legal scrutiny.
“It is possible that the ATF could go through procedure in the future… and we could have a similar rule like this in the future. Under the current administration, I don’t really see that happening, but you never know.”
– Attorney Moss
Why the Rule Failed
The district court ruled against the ATF’s pistol brace rule due to procedural violations of the Administrative Procedure Act (APA). Specifically, the court found that the ATF’s final rule differed significantly from its proposed version, which originally included a clear worksheet to help gun owners determine compliance. In contrast, the final 2023 rule replaced this with vague criteria, making it a substantial departure and not a “logical outgrowth” of the proposed rule. This shift undermined the effectiveness of the 217,000 public comments submitted, mostly in opposition, thereby violating the APA’s notice-and-comment requirements. As a result, the court deemed the rule procedurally defective.
“The court even said in their decision that ATF disregarded the fundamental principles of fair notice.”
– Attorney Moss
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