A coalition of firearms manufacturers and advocacy groups is challenging the National Firearms Act in federal court, arguing that with the tax stamp fee reduced to zero, the constitutional basis for the entire regulatory framework has collapsed.

The lawsuit, Silencer Shop Foundation v. ATF, was filed on July 4, 2025, in the Northern District of Texas. By August, 15 states including Idaho had joined as plaintiffs alongside the Silencer Shop Foundation, Gun Owners of America, SilencerCo, B&T USA, and Palmetto State Armory.

Why it matters: The NFA was upheld by the Supreme Court in 1937 as a valid exercise of Congress's taxing power. If there's no tax being collected, plaintiffs argue there's no constitutional authority to maintain the regulations.

• The legal strategy hinges on the Supreme Court's 1937 Sonzinsky decision, which specifically validated the NFA as a tax measure rather than a direct regulation of firearms. With Congress having zeroed out the tax stamp fee, plaintiffs contend the constitutional foundation cited in that landmark ruling no longer exists.

The government is expected to defend the regulations under the Commerce Clause, arguing that federal authority to regulate interstate commerce provides sufficient constitutional basis regardless of the tax component.

"The $0 tax created a legal opening that constitutional scholars have been debating since the fee reduction was announced."

The case is moving quickly through the courts. Plaintiffs filed their motion for summary judgment on October 7, 2025, seeking a definitive ruling without a lengthy trial process. The timing suggests both sides view this as primarily a question of constitutional law rather than disputed facts.

The bottom line: Whether courts will accept that eliminating the tax eliminates congressional authority remains an open question that could take months to resolve, but the legal theory has created the most significant challenge to NFA authority in decades.

Go deeper: The Reload

Read the original article in The Handbook | By Steve Duskett

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