Ninth Circuit Rejects California, Giffords Bid to Expand ATF ‘Ghost Gun’ Rule

The Ninth Circuit has rejected California and the Giffords Law Center’s attempt to force the Bureau of Alcohol, Tobacco, Firearms and Explosives to regulate even more unfinished AR-15 receivers. In State of California v. U.S. Bureau of Alcohol, Tobacco, Firearms & Explosives, a three-judge panel ruled that the plaintiffs lacked Article III standing to bring the challenge.

In an August 21 opinion, a three-judge panel vacated a lower court order that had struck down Example 4 of ATF’s 2022 frame-and-receiver rule. The case will return to the district court with instructions to dismiss it without prejudice.

California v. ATF, Ninth Circuit case No. 24-2701, began as a challenge to ATF’s treatment of unfinished receivers that had not yet received critical machining and were not packaged with completion tools.

Example 4 marks one of the few remaining lines between an unfinished piece of material and a federally regulated firearm receiver. Under Example 4, an AR-15 billet or blank is not a receiver when its critical interior areas have not been indexed, machined, or formed—and it is not sold, distributed, or possessed with the jigs, templates, instructions, or tools needed to complete it readily.

California and Giffords wanted that line pushed further back. In practical terms, they wanted ATF to treat an even less-finished chunk of aluminum or polymer as a firearm under the Gun Control Act.

California Could Not Prove Its Case Belonged in Court

California claimed Example 4 forced the state to spend more money training law enforcement and accelerating its own restrictions on unfinished receivers. Giffords made a similar argument, claiming it diverted resources to combat the alleged consequences of ATF’s decision. The Ninth Circuit was not persuaded.

Article III standing, Judge Consuelo Callahan explained, is a “bedrock constitutional requirement.” Federal courts decide actual cases involving concrete injuries. They are not supposed to serve as another legislative chamber for states and political organizations unhappy with federal policy.

Most of California’s evidence concerned money spent between 2016 and 2022—before ATF published the rule containing Example 4. The state also relied heavily on broad statistics involving privately made firearms without separating products covered by Example 4 from the parts kits already regulated by ATF.

That is a serious evidentiary problem. California could not simply point to every unserialized firearm recovered by police and blame a narrow regulatory example governing early-stage AR-15 blanks.

The state’s own numbers may have hurt more than they helped. According to the opinion, privately made firearms represented 9% of firearms recovered in Los Angeles County in July 2021. During 2022 and January 2023, the figure ranged from approximately 5% to 8%.

Rather than showing that Example 4 caused an increase, the only post-rule evidence California presented suggested a decline.

The court consequently refused to “endorse standing theories that rest on speculation” about how independent parties might behave.

A Piece of Aluminum Is Not Automatically a Firearm

The underlying dispute is not difficult for anyone who has actually machined an AR-15 receiver—or even examined one next to a raw forging—to understand.

A receiver has to become a receiver at some identifiable point in the manufacturing process. Raw material does not become a firearm merely because a person with enough time, machinery, tooling, and skill could eventually turn it into one. Given enough work, steel bar stock can become a rifle barrel. That does not make every steel bar a firearm.

ATF’s rule is already aggressive. Example 2 says a partially completed billet with one or more template holes drilled or indexed in the correct location may be classified as a receiver because someone using common hand tools could readily finish it.

Example 4 provides the counterexample: no critical machining and no accompanying completion equipment means the object has not yet crossed the federal line. That is the distinction California and Giffords wanted erased.

AmmoLand warned when the lawsuit was filed that the plaintiffs were conflating separate portions of the Gun Control Act. Congress defined a firearm to include a weapon that “may readily be converted” to fire, while separately listing the frame or receiver of such a weapon. California’s theory attempted to stretch that language until the government could regulate an object before it became a receiver at all.

This Is a Standing Decision, Not the End of the Rule

Gun owners should understand what the Ninth Circuit did and did not decide. The panel did not hold that ATF’s entire 2022 rule violates the Second Amendment. It did not decide whether Congress could constitutionally regulate particular unfinished receivers, and it did not create a nationwide right to purchase every product marketed as an “80% receiver.”

The court ruled only that California and Giffords failed to establish an injury caused by Example 4. Because the dismissal is without prejudice, another lawsuit could potentially return with different plaintiffs or stronger evidence.

State restrictions also remain separate. California can, and does, impose its own requirements on firearm precursor parts. This decision preserves the federal classification addressed by Example 4; it does not wipe away California law.

The ruling nevertheless arrives at an important time. Just days earlier, a Texas federal judge held ATF’s frame-and-receiver rule unconstitutional as applied to Defense Distributed, the Second Amendment Foundation, and covered SAF members. As AmmoLand reported, that court found the rule unconstitutionally vague and incompatible with the historical tradition of private firearm making.

The two decisions reach different issues, but they expose the same basic problem: ATF’s rule has produced years of litigation because unelected bureaucrats tried to decide when raw material becomes a firearm without a clear line drawn by Congress.

California and Giffords wanted the bureaucracy to reach even further. This time, the Constitution’s case-or-controversy requirement stopped them.

About Duncan Johnson:

Duncan Johnson is a lifelong firearms enthusiast and unwavering defender of the Second Amendment—where “shall not be infringed” means exactly what it says. A graduate of George Mason University, he enjoys competing in local USPSA and multi-gun competitions whenever he’s not covering the latest in gun rights and firearm policy. Duncan is a regular contributor and editor-in-chief for AmmoLand News and is responsible for AmmoLand’s daily gun-rights reporting and industry coverage.