The Fifth Circuit Court of Appeals unanimously ruled Thursday that firearm suppressors qualify as "arms" under the Second Amendment, a decision that directly contradicts rulings from other federal appellate courts and creates the kind of circuit split that often forces the Supreme Court's hand.
The ruling in Comeaux v. United States marks the first time a federal appeals court has extended Second Amendment protection to suppressors, the Daily Caller News Foundation reported. The court rejected the Justice Department's argument that suppressors fall outside the constitutional definition of "arms," applying the framework the Supreme Court established in its landmark 2022 Bruen decision.
The Fifth Circuit's opinion was blunt. The court wrote that the Supreme Court's Bruen ruling made clear that Second Amendment "Arms" need not be necessary for a firearm's functioning, they must only "facilitate armed self-defense." The panel also pushed back on what it called the government's "trapped-in-amber approach," which would limit the definition of arms to devices required for militia service at the Founding.
Three words from the opinion captured the bottom line: "Silencers are 'Arms.'"
The ruling did not set the defendant free. The Fifth Circuit upheld Comeaux's conviction under the National Firearms Act of 1934, reasoning that the NFA's registration and tax requirements operate similarly to a "shall issue" system for concealed carry permits. Under that logic, the NFA does not impose the kind of outright prohibition that Bruen forbids, it merely conditions possession on compliance with a regulatory process.
But the constitutional finding stands on its own. By declaring suppressors to be arms, the Fifth Circuit planted a flag that no other federal appellate court has been willing to raise. Other circuits have reached the opposite conclusion, and that disagreement is precisely the kind of conflict the Supreme Court exists to resolve.
The Second Amendment Foundation seized on the ruling immediately. Konstadinos Moros, SAF's Director of Legal Research and Education, posted on X:
"There is now a circuit split on whether suppressors are arms. This is of critical importance to those of us in states that totally ban them. While everyone else is arguing about whether registration is constitutional, we can't even register them under the NFA if we wanted to!"
That last point deserves emphasis. In states that impose outright bans on suppressors, residents cannot even enter the federal registration system. The NFA's $200 tax and ATF registration process, however burdensome, at least provides a legal pathway. A total state ban forecloses it entirely.
The Fifth Circuit's reasoning flows directly from the Supreme Court's 6-3 decision in New York State Rifle and Pistol Association v. Bruen, authored by Associate Justice Clarence Thomas in June 2022. That ruling struck down New York's "good cause" requirement for pistol permits, holding that the state could not force applicants to demonstrate a special need for self-defense before exercising a constitutional right.
Thomas grounded the opinion in historical gun laws and the debate surrounding the ratification of the 14th Amendment. The decision reshaped Second Amendment litigation nationwide, requiring courts to evaluate firearms regulations against the nation's historical tradition of regulation rather than through the interest-balancing tests many circuits had previously applied.
The Supreme Court has continued to grapple with the boundaries of Bruen in subsequent terms. The justices unanimously rejected a federal gun ban that had been used to prosecute Hunter Biden, a ruling that further narrowed the government's ability to strip firearms rights without adequate constitutional justification.
Now the Fifth Circuit has applied Bruen to accessories, not just firearms themselves. If suppressors are arms, what about other items regulated under the NFA? The 1934 law covers fully automatic firearms, "short-barreled" rifles and shotguns, and other weapons, all subject to the same $200 tax and ATF registration requirement.
SAF's official account flagged the stakes on June 18, posting on X that the Fifth Circuit "just became the first to agree that suppressors are 'arms' under the Second Amendment," calling it a development "of massive importance considering that other circuits have ruled the opposite."
Moros specifically cited Duncan v. Bonta, a Ninth Circuit case involving California's ban on detachable magazines holding more than ten rounds. In that case, a federal district court initially found the ban unconstitutional, but the Ninth Circuit's en banc panel reversed the lower court and upheld the restriction.
Duncan v. Bonta has been sitting on the Supreme Court's docket, case number 25-198, and has been relisted 21 times as of Thursday. Repeated relisting can signal that the justices are actively debating whether to take a case, though it can also mean they are waiting for related litigation to develop. The Fifth Circuit's suppressor ruling may provide exactly the kind of additional conflict that tips the balance.
The Ninth Circuit, which covers California and other western states, has a well-documented track record of reversal at the Supreme Court. The Pacific Research Institute has found that the high court has overturned almost four out of every five Ninth Circuit decisions since 2007. In the term ending in June 2021, the reversal rate hit 94 percent. That pattern has made the Ninth Circuit a frequent target for Supreme Court petitions from litigants seeking to overturn its rulings.
The Fifth Circuit's ruling also fits into a broader strategy that Trump administration officials have openly described. Harmeet Dhillon, the Assistant Attorney General for Civil Rights, told the Daily Caller News Foundation in a previous interview:
"We're identifying places where we can help make new law or create a circuit split for purposes of ultimate Supreme Court determination."
That statement, published on June 10, 2026, suggests the administration views circuit splits not as problems to avoid but as tools to force the Supreme Court's engagement on issues where lower courts have reached conflicting conclusions. The Comeaux ruling, whether or not the administration played a direct role in shaping the litigation strategy, fits that template precisely.
Circuit splits have driven some of the most consequential Supreme Court decisions in recent years. The dynamic is familiar: federal appellate courts disagree, the law becomes unsettled across different regions of the country, and the Supreme Court steps in to impose uniformity. The same pattern has played out in immigration and detention policy, where conflicting circuit rulings have pushed cases toward the high court.
For the millions of Americans who own suppressors, legally registered through the NFA's cumbersome process, the Fifth Circuit's ruling provides a constitutional foundation that did not exist before Thursday. For residents of states that ban suppressors outright, it offers something more immediate: a legal argument that their state's prohibition may violate the Second Amendment.
The practical implications depend on what happens next. If the Supreme Court grants certiorari in a case that squarely presents the question, whether through Comeaux, Duncan, or another vehicle, the justices will have to decide whether the Bruen framework extends to firearm accessories and components, not just firearms themselves.
The Court's current docket already includes major firearms questions, and the justices have shown a willingness to take on Second Amendment cases at a pace not seen in decades. The Bruen decision itself was the first major gun-rights ruling since McDonald v. Chicago in 2010, and the Court has since moved faster on related questions.
The NFA has regulated suppressors for more than ninety years. Its $200 tax, unchanged since 1934, when it was designed to be prohibitively expensive, now functions as little more than a processing fee. But the registration requirement and the patchwork of state bans mean that millions of lawful gun owners face criminal liability for possessing a device that the Fifth Circuit has now declared to be a constitutionally protected arm.
Whether the Supreme Court agrees remains to be seen. But the circuit split is real, the legal framework is established, and the question is now squarely teed up. The Court has already shown it is willing to take on politically charged firearms cases and reach unanimous results that defy easy partisan categorization.
The Fifth Circuit said three words that no federal appeals court had said before: suppressors are arms. Now the question is whether nine justices in Washington are ready to say the same.
