Supreme Court Upholds Ghost Gun Rule

7-2 decision allows ATF to regulate gun kits and unfinished receivers

The Supreme Court just handed down a 7-2 decision upholding the ATF's 2022 ghost gun rule—and years of legal uncertainty ended with it.

Justice Neil Gorsuch wrote the majority opinion, joined by Chief Justice Roberts and five others. Only Justices Thomas and Alito dissented. Federal regulators can now treat weapon parts kits and unfinished receivers as firearms under the Gun Control Act of 1968.

What the ruling actually decided: The Court zeroed in on "artifact nouns"—words that describe things by what they're meant to do, not what they look like right now. They used Polymer80's "Buy Build Shoot" kit as their central example.

"Even as sold, the kit comes with all necessary components, and its intended function as instrument of combat is obvious." — Justice Gorsuch, majority opinion

Gorsuch pointed out that the name itself tells the whole story. Hard to argue that's not a firearm when the company literally walks you through the process.

What Idaho owners should know: Anyone selling these products now has to follow standard federal firearms rules.

• Background checks required for all sales
• Serial numbers must be engraved on products
• FFL licensing required for manufacturers and dealers
• Home-built guns without serials need marking when they hit an FFL

Reality check: This was a "facial challenge"—meaning the plaintiffs argued the entire rule was invalid. The Court only needed to find one valid use case to uphold it, and they found it in those almost-complete kits that take twenty minutes and a drill press to finish. The Court acknowledged that "weapons parts kits vary widely" and some require serious time, skill, or specialized tools. Individual cases targeting specific applications of the rule could still succeed where this broad challenge failed.

The ATF rule covers "weapon parts kit that is designed to or may readily be completed, assembled, restored, or otherwise converted to expel a projectile." It also includes any "partially complete, disassembled, or nonfunctional frame or receiver" that you can readily convert.

By the numbers: Between 2016 and 2022, law enforcement recovered roughly 71,000 unserialized firearms at crime scenes according to ATF data. That's the problem the rule was built to address.

The rule bounced around courts for years after a Texas federal judge initially blocked it nationwide. The Fifth Circuit sided with the challengers, but the Supreme Court granted a stay that kept enforcement running during the appeal.

Zoom in: Enforcement is already ramping up. This month, New York hit Lawrence Destefano—owner of Indie Guns—with 71 counts for allegedly shipping firearms, ghost gun kits, and high-capacity magazines from Florida to New York. The investigation pulled in 12 firearms, two ghost gun kits, 28 high-capacity magazines, and over 1,400 rounds. Destefano allegedly used encrypted messaging and split shipments to stay under the radar.

The bottom line: The ATF's ghost gun rule stands. Manufacturers can still challenge how it applies to their specific products, but the gray area is gone. If you're in this business, you know what the rules are now.

Go deeper:

• Supreme Court decision details
• NRA legal analysis
• New York enforcement action