Federal Judge Strikes Down Key Aspects of ATF Ghost Gun Rule on Second Amendment and Vagueness Grounds
In a significant development for firearm regulation and Second Amendment jurisprudence, U.S. District Judge Reed O’Connor of the Northern District of Texas issued an opinion and order on August 17, 2026, holding that critical provisions of the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) 2022 “Frame or Receiver” Final Rule are unconstitutional. The ruling came in the long-running VanDerStok v. Garland litigation (now involving Defense Distributed and the Second Amendment Foundation as the remaining plaintiffs). Judge O’Connor determined that the rule violates the Second Amendment and is void for vagueness under the Fifth Amendment’s Due Process Clause. He granted permanent injunctive relief limited to the plaintiffs, their members, and specific products.
The decision does not wipe the rule off the books nationwide. It is party-specific and product-specific in key respects. Still, it represents a notable post-Bruen application of historical tradition analysis to modern regulatory efforts aimed at unfinished frames, receivers, and weapons parts kits commonly labeled “ghost guns.”
Background on the ATF Frame or Receiver Rule
In April 2022, the ATF finalized its rule titled “Definition of ‘Frame or Receiver’ and Identification of Firearms.” The regulation expanded the longstanding understanding of what constitutes a “firearm” and a “frame or receiver” under the Gun Control Act of 1968 (GCA). It covered partially complete, disassembled, or nonfunctional frames and receivers, as well as certain weapons parts kits that “may readily be completed, assembled, restored, or otherwise converted” into functional firearms or frames/receivers.
The rule allowed ATF to consider extrinsic factors such as accompanying jigs, templates, tools, instructions, and marketing materials when making classification decisions. Manufacturers and sellers of covered items were required to mark them with serial numbers, obtain federal firearms licenses where appropriate, conduct background checks, and maintain records—the same requirements that apply to completed firearms.
ATF and the Department of Justice justified the rule by pointing to a sharp rise in recoveries of privately made firearms (PMFs) at crime scenes. Officials argued that easy-to-assemble kits sold online without serialization or background checks undermined tracing efforts and allowed prohibited persons to acquire functional firearms. Sales of such kits had grown substantially in the years leading up to the rule.
Gun rights organizations and manufacturers challenged the rule almost immediately. They argued that unfinished frames and receivers had not historically been treated as firearms, that the rule exceeded ATF’s statutory authority under the GCA, and that it improperly restricted the longstanding American tradition of individuals manufacturing firearms for personal use.
The Supreme Court Decision in Bondi v. VanDerStok
The case reached the Supreme Court. In March 2025, the Court issued its decision in Bondi v. VanDerStok (previously styled Garland v. VanDerStok). Writing for a 7-2 majority, Justice Neil Gorsuch held that the GCA’s text is broad enough to permit ATF to regulate some weapon parts kits and unfinished frames or receivers. The Court concluded that the rule was not facially inconsistent with the statute. It reversed the Fifth Circuit’s earlier affirmance of a district court vacatur and remanded for further proceedings.
Justices Clarence Thomas and Samuel Alito dissented. The majority emphasized that facial challenges require showing that a regulation is invalid in all its applications. It left open the possibility of as-applied challenges to particular products and did not definitively resolve every constitutional question.
After the Supreme Court ruling, the remaining plaintiffs—primarily Defense Distributed and the Second Amendment Foundation—continued litigating residual claims in the Northern District of Texas before Judge O’Connor. Those claims included Administrative Procedure Act challenges as well as constitutional claims under the Second and Fifth Amendments.
Judge O’Connor’s August 2026 Ruling
On August 17, 2026, Judge O’Connor issued a memorandum opinion and order granting summary judgment to the plaintiffs on their Second Amendment and void-for-vagueness claims. He granted summary judgment to the government on the remaining APA claims.
On the APA counts, the court found that ATF had adequately explained its change in position by citing technological developments, crime data involving privately made firearms, and the grandfathering of certain prior classifications. The Supreme Court’s decision had effectively confirmed that Congress delegated interpretive authority over the terms “firearm” and “frame or receiver.”
The constitutional analysis went differently. Applying the two-step framework from New York State Rifle & Pistol Association v. Bruen (2022), Judge O’Connor first concluded that the Second Amendment’s plain text covers the right to make and repair personal firearms. The right to keep and bear arms logically includes the ability to manufacture them for lawful personal use, a practice with deep roots in American history.
At the historical tradition step, the government pointed to colonial-era laws concerning barrel proofing and gunpowder storage. The court found these analogies inadequate. Those historical regulations primarily addressed product safety for the user and general fire hazards, not the modern goals of serialization, tracing, and preventing prohibited persons from acquiring unfinished components. The opinion emphasized that historical tradition from the colonial period through the 19th century strongly supports unregulated self-manufacture of arms by private individuals.
Separately, the court held that the rule is unconstitutionally vague. The key term “readily” is defined by reference to a non-exclusive list of eight factors (including time, ease, expertise, and equipment required). The regulation also permits consideration of associated jigs, templates, instructions, and marketing materials. According to the court, this framework fails to give ordinary people fair notice of what is prohibited and invites arbitrary or discriminatory enforcement. The phrase “clearly identifiable as an unfinished component part of a weapon” likewise provides no workable, predictable standard.
Scope of the Permanent Injunction: Who Is Protected and From Which Provisions
Judge O’Connor ruled that 27 C.F.R. § 478.11 and § 478.12(c) are unconstitutional under the Second Amendment and void for vagueness under the Fifth Amendment. These are the core definitional provisions of the Final Rule that expanded the meaning of “firearm” to include certain weapons parts kits and broadened “frame or receiver” to cover partially complete, disassembled, or nonfunctional frames or receivers (including parts kits) that are designed to or may readily be completed, assembled, restored, or otherwise converted to function as a frame or receiver.
The permanent injunction prohibits the Bureau of Alcohol, Tobacco, Firearms and Explosives, the Department of Justice, and related officials from enforcing those two specific regulatory provisions against the following parties:
• Defense Distributed
• The Second Amendment Foundation (SAF)
• Any of SAF’s current or future members
The injunction is further limited to specific Defense Distributed products at issue in the case: M1911 80% frames, the G80 Build Kit, the unfinished receiver, and the grip module associated with those products.
This means the protected parties cannot be subjected to the serialization, licensing, background-check, or record-keeping requirements that flow from the challenged definitions as applied to those particular items. The relief is party-specific and product-specific. It does not extend to the general public, to non-members of SAF, or to other manufacturers’ products. All other provisions of the Gun Control Act and ATF regulations remain fully applicable, and the government retains authority to enforce the Frame or Receiver Rule against non-protected parties and products.
Implications and Open Questions
The ruling does not automatically free all unfinished frames, receivers, or kits from regulation across the country. Enforcement against non-parties and other products can continue under the rule as it stands, subject to future challenges. Federal firearms licensees and individuals outside the protected classes must still navigate the existing regulatory landscape carefully. Background check, serialization, and licensing requirements under the GCA remain in force for items that qualify as firearms under the statute as interpreted by the Supreme Court.
The decision is almost certain to be appealed. The government retains the ability to seek a stay pending appeal and to challenge both the constitutional holdings and the scope of the injunction. Given the Supreme Court’s prior statutory holding and the current composition of the Court, the ultimate outcome remains uncertain. Parallel or follow-on litigation by other parties is also likely.
Broader context matters. The August 2026 ruling arrives amid other significant developments in federal firearms law, including recent litigation over National Firearms Act registration requirements after Congress zeroed out certain transfer and making taxes. Courts continue to grapple with the application of Bruen’s historical tradition test to contemporary technologies and regulatory schemes that did not exist at the Founding.
For gun owners, manufacturers, and advocates, the decision underscores the ongoing vitality of as-applied constitutional challenges even after a facial statutory loss at the Supreme Court. It also highlights the practical importance of membership in organizations that can secure party-specific relief. For regulators and law enforcement, it illustrates the difficulty of crafting rules that both address modern tracing and crime concerns and satisfy rigorous historical and notice requirements.
Looking Ahead
The ATF Frame or Receiver Rule was designed to close what the agency viewed as a significant loophole enabling the proliferation of untraceable firearms. The Supreme Court upheld ATF’s basic statutory authority to regulate certain kits and unfinished components. Judge O’Connor’s subsequent ruling, however, found that the particular manner in which the agency exercised that authority—especially the open-ended “readily” standard and the consideration of extrinsic materials—ran afoul of both the Second Amendment’s historical tradition and basic due process principles of fair notice.
Whether this limited injunction expands, is stayed, or is reversed on appeal will shape the next chapter of the ghost gun debate. In the meantime, the decision reinforces a core principle of recent Second Amendment case law: regulations must be measured against the Nation’s historical tradition of firearm regulation, and modern rules that lack close historical analogues face an uphill battle, particularly when they restrict core aspects of the right to keep and bear arms such as personal manufacture.
The litigation over unfinished frames, receivers, and parts kits is far from over. Judge O’Connor’s August 17, 2026 opinion ensures that the conversation will continue in the appellate courts and, quite possibly, back before the Supreme Court.