The Supreme Court has never issued a ruling that directly addresses suppressors. No case squarely challenging the National Firearms Act’s treatment of silencers has been accepted for full briefing and argument. But three recent Second Amendment decisions, Bruen, Rahimi, and Cargill, have rewritten the legal framework courts must use when evaluating firearm and accessory regulations, and those rulings are already shaping how lower courts handle suppressor challenges. The Supreme Court rulings on suppressors, then, are indirect: they come from cases about other weapons and other regulations, but they set the rules of the game.
No Direct Ruling, But a Changed Framework
Suppressors sit inside the National Firearms Act. Federal law defines a “firearm silencer” as any device designed for silencing, muffling, or diminishing the report of a portable firearm, including component parts intended for assembling one.1Office of the Law Revision Counsel. 18 USC 921 – Definitions2Office of the Law Revision Counsel. 26 USC 5845 – Definitions3Office of the Law Revision Counsel. 26 USC Chapter 53, Subchapter B – Registration of Firearms4Office of the Law Revision Counsel. 26 USC 5811 – Transfer Tax5Office of the Law Revision Counsel. 26 USC 5871 – Penalties6Office of the Law Revision Counsel. 18 US Code 3571 – Sentence of Fine
That is the regime the Supreme Court has left standing. What it has changed is the analytical structure that any challenge to that regime must move through.
Bruen and the Text-and-History Test
In 2022, New York State Rifle & Pistol Association, Inc. v. Bruen scrapped the two-step, interest-balancing approach most federal courts had used to evaluate firearm regulations. The Court called the balancing step “one step too many.”7Supreme Court of the United States. New York State Rifle and Pistol Association Inc v Bruen
Bruen replaced it with a text-and-history inquiry. Courts first ask whether the Second Amendment’s plain text covers the regulated conduct. If it does, the regulation is presumptively unconstitutional, and the government must show the restriction is consistent with the nation’s historical tradition of firearm regulation. Modern policy arguments about public safety and social utility are no longer part of the analysis.7Supreme Court of the United States. New York State Rifle and Pistol Association Inc v Bruen
Bruen itself involved a concealed carry licensing scheme and said nothing about suppressors. Its importance here is structural. The threshold question in any suppressor challenge is now whether a silencer qualifies as an “arm” under the Second Amendment’s text. If a court says yes, every federal and state suppressor regulation has to survive historical scrutiny, and the government cannot fall back on the policy rationales that had carried the day in earlier decades.
Rahimi Refines What the Historical Test Requires
Lower courts diverged almost immediately over how tightly a modern regulation had to match a founding-era analogue. In 2024, United States v. Rahimi answered the question in a case about disarming individuals subject to domestic violence restraining orders under 18 U.S.C. § 922(g)(8).
The Court held that the historical inquiry is about principles, not precision. A modern law does not need to be a “dead ringer” or “historical twin.” The right question is whether the challenged regulation imposes a comparable burden on the right to armed self-defense and whether that burden is comparably justified by the kinds of concerns that historically supported firearm regulation. The Second Amendment, the Court wrote, is “not a law trapped in amber,” and historical regulations “reveal a principle, not a mold.”8Supreme Court of the United States. United States v Rahimi
Rahimi cuts in both directions for suppressor litigation. It gives the government room to defend NFA registration by pointing to broad historical traditions of licensing and record-keeping, even without a founding-era statute aimed at noise-reduction devices. It also gives challengers room to argue that a flat possession ban goes further than any principle the historical record actually supports, because Rahimi requires the burden to be proportionate.
Cargill Limits How Far the ATF Can Stretch a Statute
Decided the same month as Rahimi in June 2024, Garland v. Cargill was a bump stock case rather than a suppressor case, but its reasoning reaches the NFA’s definitions. The ATF had classified bump stocks as machineguns under 26 U.S.C. § 5845(b). The Supreme Court struck down that classification, holding that a semiautomatic rifle equipped with a bump stock does not fire more than one shot by a single function of the trigger, which is the element the statutory definition of “machinegun” turns on.9Supreme Court of the United States. Garland v Cargill
The majority put the principle plainly: “It is never our job to rewrite statutory text under the banner of speculation about what Congress might have done.”9Supreme Court of the United States. Garland v Cargill For suppressors, that reasoning narrows the ATF’s room to interpret what counts as a “silencer” or a silencer component under 18 U.S.C. § 921(a)(25), which reaches parts “intended only for use” in assembling a silencer.1Office of the Law Revision Counsel. 18 USC 921 – Definitions After Cargill, courts are more likely to read that language strictly and to demand clear textual grounding before treating items like solvent traps or inline fuel filters as regulated components.
The Suppressor Cases the Court Has Declined to Hear
Cert petitions have arrived, and the Court has passed on them. In December 2024, the justices denied certiorari in Schieferle v. United States, which asked whether items capable of muffling a firearm’s report, specifically inline fuel filters and solvent traps, fall within the NFA’s silencer ban or are protected by the Second Amendment. The lower court’s decision stands, and the NFA’s reach over silencer-adjacent items is undisturbed for now.
A cert denial is not a ruling on the merits and carries no precedential weight. What it does say is that the justices have not yet found a suppressor case with the record, the circuit split, or the legal posture they want. Lower courts are meanwhile reaching different conclusions about whether suppressors qualify as “arms” under the Second Amendment’s text and whether the NFA’s registration scheme survives the Bruen inquiry. That kind of disagreement is often what eventually pulls the Supreme Court in.
The “Common Use” Question From Heller
The threshold Second Amendment question for suppressors runs through District of Columbia v. Heller. Heller held that the Second Amendment protects weapons “typically possessed by law-abiding citizens for lawful purposes” and excludes “dangerous and unusual weapons” not in common use.10Library of Congress. District of Columbia v Heller, 554 US 570 A device has to clear that bar before the government’s justifications even come into play.
The numbers matter here. As of early 2026, nearly six million suppressors are registered in the National Firearms Registration and Transfer Record. Suppressor ownership is legal in 42 states, and roughly 40 of those states permit their use while hunting. Advocates argue that adoption at that scale is hard to call “unusual.” The government’s contrary position becomes more difficult to maintain as the registered inventory grows.
What This Means for State Suppressor Bans
Eight states and the District of Columbia currently prohibit civilian suppressor ownership: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, and Rhode Island. These jurisdictions have historically defended their bans as an exercise of police powers directed at a distinct public safety concern.
After Bruen, that defense has to be reframed. A state must now show that a total ban fits within the historical tradition of firearm regulation, not just that it advances a compelling policy interest. Noise-reduction technology did not exist in any meaningful form during the founding era, so there is no direct historical precedent aimed at it. Courts are left to reason by analogy, and Rahimi confirmed that the analogy is a search for shared principles, not mirror-image statutes.
Challengers argue that historical analogues can be found for licensing and registration but are much harder to find for outright bans on categories of arms commonly possessed by law-abiding citizens. With 42 states allowing ownership and nearly six million registered units, the gap between ban states and the rest of the country is the sort of division that tends to attract Supreme Court review over time.
Until the Court takes a suppressor case, the doctrinal picture is this: no direct ruling exists, the NFA’s registration scheme and the state bans remain in force, and the questions that will decide their fate, whether suppressors are “arms,” whether they are in “common use,” and whether the regulations at issue fit a historical principle rather than a historical twin, are all live in the lower courts.