Registration Injunction Takes Effect: What the New Ruling Means for Pennsylvania Gun Owners

Updated August 13, 2026

A major federal court ruling affecting suppressors, short-barreled rifles, short-barreled shotguns, and certain other NFA firearms has now taken effect. But for Pennsylvania residents, there is an important complication that gun owners in many other states do not face.

While the federal court has blocked ATF from enforcing several National Firearms Act registration requirements against the parties protected by the ruling, Pennsylvania law independently ties the legality of many NFA firearms to compliance with the National Firearms Act.

That means Pennsylvania gun owners should be very cautious about assuming that "no Form 4 federally" automatically means "no Form 4 in Pennsylvania."

What Happened to the NFA?

On August 5, 2026, U.S. District Judge James Wesley Hendrix of the Northern District of Texas entered final judgment in Silencer Shop Foundation v. ATF, consolidated with Jensen v. ATF.

The case arose after Congress reduced the NFA making and transfer taxes on suppressors, short-barreled rifles (SBRs), short-barreled shotguns (SBSs), and Any Other Weapons (AOWs) to $0 effective January 1, 2026.

The NFA had historically been upheld as an exercise of Congress's constitutional taxing power. The plaintiffs argued that once Congress eliminated the tax on these firearms, the registration, application, and approval system that existed to administer that tax could no longer be justified under the taxing power.

Judge Hendrix agreed.

The court permanently prohibited ATF and the Department of Justice from enforcing several major provisions of the NFA against the plaintiffs and, where applicable, their current and future members and customers. The affected provisions include the NFA's transfer approval, making approval, registration, and possession-of-unregistered-firearm requirements.

Importantly, this was not a nationwide invalidation of the entire NFA. The injunction applies to the plaintiffs and the people or customers protected through them. The judgment specifically protects, where applicable, current and future members and customers of the plaintiff organizations and businesses.

Organizations and businesses involved in the case include Gun Owners of America, Gun Owners Foundation, Silencer Shop Foundation, Palmetto State Armory, SilencerCo, B&T USA, and the Firearms Regulatory Accountability Coalition, among others. Fifteen states also participated, but Pennsylvania was not one of those states.

What Happened to the Seven-Day Stay?

When the court entered its final judgment on August 5, it temporarily stayed the judgment for seven days to give the federal government an opportunity to seek relief from the Fifth Circuit Court of Appeals.

That seven-day stay expired on August 12, 2026, without the government obtaining an additional stay.

As a result, the injunction became effective on August 13.

Gun Owners of America and Silencer Shop demonstrated the practical effect of the ruling shortly after midnight on August 13, when two GOA members received suppressors from Silencer Shop in Texas without Form 4 approval or entry into the National Firearms Registration and Transfer Record. GOA states that ATF and DOJ had been notified in advance of the planned transfers and did not object.

Representative Andrew Clyde has also stated that he received confirmation from the Trump Administration that DOJ will not appeal the decision.

That is significant, but it is worth distinguishing the two issues: the seven-day stay has expired, while the normal period in which a notice of appeal could technically be filed is a separate matter. More importantly for Pennsylvania residents, even a final federal judgment does not automatically rewrite Pennsylvania law.

Pennsylvania Is Different

Pennsylvania has its own statute dealing with what it calls "prohibited offensive weapons."

Under 18 Pa.C.S. § 908(a):

"A person commits a misdemeanor of the first degree if, except as authorized by law, he makes repairs, sells, otherwise deals in, uses, or possesses an offensive weapon."

The statute includes machine guns, sawed-off shotguns, and firearms specially made or adapted for concealment or silent discharge within the definition of offensive weapons.

More importantly, Pennsylvania provides a specific defense under § 908(b)(1) when the person can prove that, with certain exceptions, he complied with the National Firearms Act.

This is the provision that has traditionally allowed Pennsylvania residents to legally own suppressors, SBRs, SBSs, machine guns, and other qualifying NFA firearms.

Pennsylvania Does Not Literally Have Its Own "Form 4"

There is an important technical distinction here.

Pennsylvania does not operate a separate suppressor registry and does not issue a Pennsylvania Form 4.

Instead, Pennsylvania law effectively piggybacks on federal NFA compliance.

The Pennsylvania Commonwealth Court has described the system this way: most NFA items, including machine guns, suppressors, short-barreled rifles, and short-barreled shotguns, are prohibited as offensive weapons unless they are registered under the NFA.

Historically, there was little practical difference. If you purchased a suppressor from a Pennsylvania dealer, you completed an ATF Form 4, ATF approved the transfer, the suppressor was entered into the NFRTR, and that federal registration provided the basis for Pennsylvania's § 908 defense.

The new federal injunction creates a situation that Pennsylvania law has never really had to address.

The Pennsylvania Problem

Consider a Pennsylvania resident who is covered by the Silencer Shop Foundation injunction and purchases a suppressor without a Form 4.

Federally, ATF may be prohibited by the court order from enforcing the challenged NFA registration provisions against that person.

But Pennsylvania's statute still says that NFA compliance is a defense to prosecution under § 908.

This raises a new legal question:

If federal registration is unconstitutional and unenforceable against a particular person, is that person considered to have "complied with the National Firearms Act" for purposes of Pennsylvania § 908(b)(1) even though the suppressor was never registered?

There is a strong argument that a person acting pursuant to a federal court injunction is complying with applicable federal law. The NFA provisions have not simply been ignored—the federal government has been judicially prohibited from enforcing them against that person.

Pennsylvania § 908(a) also contains the phrase "except as authorized by law," and § 908(b)(3) separately provides that the section does not apply to a person dealing with or possessing a firearm for purposes not prohibited by Pennsylvania law.

Those provisions may become important in future litigation.

But at the moment, there does not appear to be a Pennsylvania appellate decision answering this new situation.

That distinction matters.

The Texas federal court did not strike § 908 from Pennsylvania's Crimes Code, Pennsylvania was not one of the plaintiff states, and the injunction does not prevent Pennsylvania prosecutors from enforcing Pennsylvania statutes.

Can a Pennsylvania Resident Buy a Suppressor Without a Form 4 Right Now?

For a person protected by the federal injunction, the answer on the federal side may now be yes.

For Pennsylvania, however, the answer is much less certain.

Silencer Shop states that its current and future customers are protected by the injunction and that, in states where suppressors are otherwise legal, qualifying suppressors can be transferred without Form 4 approval.

But Pennsylvania presents an additional state-law issue because of § 908.

Until Pennsylvania courts, the Attorney General, the Pennsylvania State Police, or the General Assembly clarify how § 908 applies when federal NFA registration is judicially unenforceable, Pennsylvania residents should not assume that being protected from federal NFA enforcement automatically eliminates the state-law registration issue.

For Pennsylvania dealers in particular, immediately abandoning the Form 4 process could create unnecessary legal exposure despite the favorable federal ruling.

What About Existing Registered Suppressors and SBRs?

Nothing about this ruling makes previously registered NFA firearms illegal.

If you already possess a suppressor, SBR, SBS, or other firearm pursuant to an approved Form 1 or Form 4, your existing federal registration continues to provide clear documentation of NFA compliance and therefore avoids the new uncertainty surrounding Pennsylvania § 908.

There is no reason to attempt to "unregister" an existing firearm because of this ruling.

What About Machine Guns?

Machine guns are a different situation.

Congress did not reduce the NFA making and transfer taxes on machine guns to $0, and the August 5 judgment does not eliminate the NFA registration system applicable to them. The same is true for destructive devices.

The new ruling primarily concerns the categories for which Congress eliminated the NFA tax: suppressors, SBRs, SBSs, and certain AOWs.

What Should Pennsylvania Gun Owners Do?

The August 5 ruling is unquestionably a major development for the National Firearms Act, and the expiration of the seven-day stay on August 12 means the injunction is no longer merely theoretical. Covered customers have already completed suppressor transfers without federal NFA registration.

Pennsylvania, however, remains a special case.

For the time being, the most conservative approach for a Pennsylvania resident or Pennsylvania FFL is to continue using the traditional Form 4/Form 1 registration process unless and until there is authoritative guidance establishing that a transaction without federal registration satisfies—or is exempt from—18 Pa.C.S. § 908.

The issue is not that Pennsylvania maintains its own suppressor registry. It does not.

The issue is that Pennsylvania historically made federal NFA compliance the mechanism that protects a Pennsylvania resident from prosecution under the state's prohibited-offensive-weapons law.

Now that a federal court has prohibited ATF from requiring that registration from certain people, federal and Pennsylvania law no longer fit together as neatly as they did before.

That is likely to be one of the next major legal questions arising from Silencer Shop Foundation v. ATF.

Bottom Line

The seven-day stay on the August 5 NFA judgment has expired, and the injunction is now in effect. For people covered by the court's order, ATF is prohibited from enforcing significant portions of the NFA registration and approval system for untaxed NFA firearms.

But Pennsylvania residents should not interpret that ruling as an automatic green light to possess an unregistered suppressor, SBR, or SBS.

Pennsylvania's § 908 remains in effect, and Pennsylvania courts have previously characterized these firearms as prohibited offensive weapons unless they are registered under the NFA. Until Pennsylvania law catches up with the new federal ruling—or a court determines that possession pursuant to the federal injunction satisfies Pennsylvania's statutory exceptions—the safest course for Pennsylvania buyers and dealers remains continued NFA registration.

This is a rapidly developing area of law, and the situation may change as federal agencies and Pennsylvania authorities respond to the ruling.

This article is provided for general informational purposes and is not legal advice. Firearm laws and court orders can change rapidly, and individuals and FFLs should verify current federal and Pennsylvania requirements before making, transferring, or possessing an NFA-regulated firearm.