Bondi v. Jennifer VanDerStok
In brief
The ATF may continue to regulate weapon-parts kits and components that fall within the Gun Control Act’s definition of a firearm.
- Where it stands
- Decided
Decided 7-2 · March 26, 2025 · Opinion by Justice Gorsuch
- What it’s about
- This case determined whether the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) acted within its authority under the Gun Control Act of 1968 when it issued a rule regulating "ghost guns"—weapon parts kits and unfinished frames that can be readily assembled into functional firearms.
- Who it affects
- Manufacturers, sellers, and importers of covered easy-to-assemble kits must follow federal firearm requirements, including licensing, records, serial numbers, and background checks.
Summary: written with AI from the case record.

What it's about
The Supreme Court upheld the ATF's rule, finding that such kits and components fall within the statutory definition of a firearm.
The case addresses whether federal firearm law reaches products marketed as parts but designed to be readily assembled into working guns.
Question presented
Did the ATF exceed its statutory authority in promulgating its Final Rule purporting to regulate so-called “ghost guns”?
What the Court decided
Holding
The ATF’s rule is not facially inconsistent with the GCA. Pp. 7– 24. (a) Section 478.11’s provisions addressing weapon parts kits are not facially invalid under §921(a)(3)(A). That subsection contains two requirements: a “weapon” must be present, and that weapon must be able to expel a projectile by the action of an explosive, designed to do so, or susceptible of ready conversion to operate that way. Some weapon parts kits meet that description. Consider, for instance, Polymer80’s “Buy Build Shoot” kit, which contains all necessary components to build a semiautomatic pistol and can be assembled in about 20 minutes using common tools. 86 F. 4th 179, reversed and remanded.
- Result
- Reversed
The vote
- Joined the judgment
- Concurred in a separate opinion
- Dissented
- Wrote an opinion
- Concurring · 3agreed with the result, wrote separately
From the opinions
“The ATF’s rule is not facially inconsistent with the GCA.”
“The Government now asks us to rewrite statutory text so that it can regulate weapon-parts kits. This time, the Court obliges. I would not.”
What's next
Lower courts must apply the Supreme Court’s decision in related cases. The ATF can continue enforcing its rule, while businesses must assess whether their products are covered.
Why it matters
For example, a kit containing all parts needed to build a semiautomatic pistol may be covered.
Documents
Docket activity
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AI analysis generated: Impact Analysis
AI analysis generated: Opinion Summary
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Audio Recording added: Oral Arguments - Bondi
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More questions
- What did the Supreme Court rule in Bondi v. VanDerStok?
- The Court upheld the ATF rule regulating certain weapon-parts kits and unfinished components as firearms under the Gun Control Act.
- Who won Bondi v. VanDerStok?
- The federal government won. The Court concluded that the ATF rule is not facially inconsistent with the Gun Control Act.
- What does Bondi v. VanDerStok mean for kit sellers?
- Sellers of covered kits or components may need federal licenses, serial numbers, sales records, and background checks.
- Is the ATF ghost-gun rule still the law after Bondi v. VanDerStok?
- Yes. The Supreme Court upheld the rule, allowing the ATF to continue enforcing it against covered products.
Sources
Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.