Court Rules “Ghost Gun” Code Isn’t Automatically Protected by the First Amendment

Federal judges have drawn a sharper line between digital instructions and protected expression, ruling that computer code used to produce untraceable “ghost guns” is not automatically shielded by the First Amendment. The decision marks a significant turn in a long-running fight over whether publishing code that can be fed into a 3D printer should be treated like sharing a political essay or like handing over a weapons blueprint.

The ruling keeps New Jersey’s restrictions on distributing 3D gun files in place and signals that courts are increasingly willing to treat certain kinds of code as conduct that can be regulated for public safety. It also raises new questions for software developers, online platforms, and gun rights advocates who have argued that “code is speech” should operate as a blanket constitutional defense.

How New Jersey’s ghost gun law ended up in a First Amendment fight

New Jersey lawmakers targeted ghost guns after law enforcement began recovering more untraceable firearms assembled from kits and homemade components at crime scenes. The state’s statute made it illegal to distribute digital files that could be used with 3D printers or computer-controlled machines to manufacture firearms that lack serial numbers and are difficult for investigators to track. Those restrictions put the law on a collision course with activists who had been sharing firearm CAD and CAM files online as part of what they cast as a political and educational project.

Gun rights advocates and software publishers responded with a lawsuit that framed the New Jersey law as a direct attack on free speech, arguing that the state had effectively criminalized the publication of computer code. They insisted that their CAD and CAM files were expressive, both as technical documentation and as a statement in favor of what they saw as a broad Second Amendment right to build weapons at home. According to litigation reporting, the plaintiffs sought to block enforcement of the statute and pressed federal judges to treat the code as core protected speech rather than as a set of functional instructions.

The appeals court’s core holding on code and speech

The federal appeals panel that reviewed the case rejected the idea that all computer code should be treated as expressive speech for constitutional purposes. While the judges acknowledged that code can contain expressive elements, they treated the specific 3D printer files at issue as primarily functional tools designed to produce weapons that lawmakers had valid reasons to regulate. In their view, the First Amendment did not require courts to ignore the practical consequences of distributing files that allow anyone with a consumer-grade 3D printer to manufacture untraceable guns.

In a key passage highlighted by coverage of the, the panel rejected what it described as a categorical “code is speech” theory. The judges compared the online distribution of 3D gun files to handing over physical jigs, tools, or blueprints that are intended to enable unlawful weapons manufacturing and concluded that the state could regulate that conduct. They treated the New Jersey law as a permissible attempt to curb a specific, concrete harm rather than a broad censorship regime aimed at ideas about firearms or home manufacturing.

Why “code is speech” lost its blanket status

For years, technologists and civil libertarians have argued that computer code should be treated as a form of language, pointing to encryption programs and open-source software projects as examples of expressive work. The plaintiffs in the New Jersey case leaned heavily on that tradition, urging the court to apply strict scrutiny to any law that singled out code. The appeals panel instead drew a distinction between code that primarily communicates ideas and code that mainly functions as a set of instructions to produce a physical object that lawmakers can regulate.

The judges emphasized that context matters: a mathematical description of a firearm design or a policy paper about ghost guns might receive full First Amendment protection, while a ready-to-print file intended to bypass background checks could be treated differently. In the language quoted by summaries of the, the court explained that a generalized claim that “code is speech” could not override the state’s interest in regulating dangerous conduct in both physical and digital spaces. That reasoning allowed the panel to uphold New Jersey’s law without declaring all software outside the First Amendment.

What the decision says about ghost guns and public safety

The ruling lands at a moment when ghost guns have become a priority for both state and federal regulators. Law enforcement agencies have reported a sharp increase in firearms recovered without serial numbers, and policymakers have warned that 3D printers and unfinished frames make it easier to sidestep background checks. The New Jersey law at the center of the case was designed to cut off one supply channel by targeting the digital files that hobbyists and activists use to print frames and receivers at home.

Nationally, the issue reached the highest court in a separate case, Bondi v. VanDerStok, where a 7 to 2 Decision in Bondi v. VanDerStok Upholds ATF Rule Regulating Ghost Guns, according to case summaries. That case involved a federal rule that treated kits and partially complete receivers as firearms for regulatory purposes, a move that supporters said was necessary because ghost guns were increasingly recovered at crime scenes nationwide. Taken together, the federal and New Jersey decisions reflect a broader judicial willingness to allow governments to treat untraceable weapons as a distinct threat to public safety.

How the ruling fits with the Supreme Court’s ghost gun precedent

The New Jersey appeals decision does not directly interpret federal firearms law, but it aligns with a recent trend in which courts have upheld regulations on ghost guns. In Bondi v. VanDerStok, The Supreme Court on Wednesday upheld a Biden-era rule that brought certain gun kits and unfinished frames under the definition of “firearm,” which allowed the Bureau of Alcohol, Tobacco, Firearms and Explosives to require serial numbers and background checks on those products. That ruling, described in analysis of the, signaled that the justices were open to treating ghost gun components as regulable items rather than as unregulated parts.

Separate congressional research has noted that, On March 26, 2025, the Supreme Court issued an opinion in Bondi v. VanDerStok upholding a 2022 rule that redefined key terms in federal firearms regulations, according to a CRS PRODUCT prepared by the LIBRARY of CONGRESS. While that case focused on how far the executive branch could go in interpreting statutes, the New Jersey dispute turned on the First Amendment. Taken together, the decisions suggest that courts are increasingly comfortable with a regulatory framework that treats both physical ghost gun components and the digital tools that produce them as subjects of targeted government oversight.

The Third Circuit’s reasoning about CAD and CAM files

The heart of the New Jersey case, as one pro-gun advocacy summary put it, was the First Amendment claim that CAD and CAM files should be treated as protected expressive works. Plaintiffs argued that their computer-aided design files embodied technical knowledge and political advocacy in favor of home gun building, and that criminalizing their distribution was equivalent to banning a book or a how-to manual. They insisted that the state was punishing them for their message rather than for any concrete harm caused by the code itself.

The Third Circuit rejected that framing and instead focused on the functional nature of the files. According to a detailed account of the opinion, the court found that the CAD and CAM files were primarily tools that allowed users to manufacture weapons that would evade traditional firearms regulations, rather than expressive commentary about guns. The panel concluded that this functional character allowed New Jersey to regulate the distribution of those files without violating the First Amendment, a position reflected in the description that the Third Circuit found under an expressive-speech theory.

Digital code as conduct: the broader federal court trend

The New Jersey decision is not an isolated event. Earlier this month, a separate federal court decision described in a commentary titled Breaking: Federal Court Limits, Printed Gun Code First Amendment Protections, framed the issue as part of a larger shift in how judges think about digital instructions. That analysis explained that The Court’s Groundbreaking Decision treated 3D-printed gun code as a form of conduct that can be regulated when it directly enables the production of weapons, rather than as pure speech that must be given the highest level of protection. The commentary argued that this approach could reshape how courts handle future disputes over software that controls physical devices.

According to the same Breaking: Federal Court discussion, the judges in that case concluded that not all digital code receives constitutional protection, particularly when it is tightly linked to unlawful or heavily regulated conduct. The author pointed to the possibility that courts will increasingly analyze whether code is being used as a tool to commit or facilitate a crime, rather than starting from the assumption that publishing any software is equivalent to publishing a book or academic article.

Implications for software publishers and online platforms

The New Jersey ruling and related federal decisions raise difficult questions for developers, hosting services, and social networks that handle user-generated code. Platforms that allow sharing of CAD or CAM files may now face more pressure to screen for content that could be used to manufacture untraceable firearms, particularly in jurisdictions that have passed laws similar to New Jersey’s. The appeals court’s reasoning suggests that states can argue that hosting such files is closer to facilitating the distribution of illegal weapons than to amplifying political speech, which could affect how companies write their terms of service and content moderation rules.

Legal practitioners have already begun to explain how these rulings might affect compliance strategies. One guide on how to navigate complex procedural rules, published by a company that operates the Smartrules platform, frames itself as a tool to help lawyers track evolving requirements across jurisdictions. While that resource focuses on civil procedure rather than firearms law, the same kind of careful rule-tracking will likely be necessary for companies that distribute code worldwide. If more states follow New Jersey’s lead, platforms may need to build region-specific filters or risk being accused of facilitating violations of local ghost gun statutes.

How both sides are likely to adapt

Gun rights advocates and open-source software supporters are unlikely to abandon the “code is speech” argument entirely, but they may shift tactics in response to the New Jersey ruling. One likely move is to emphasize the educational and political aspects of their projects, such as publishing detailed written guides, diagrams, and commentary that are more clearly expressive and less directly tied to manufacturing. They may also pursue narrower legal challenges that target how specific statutes are written or enforced, rather than insisting on a categorical rule that all code must be treated as speech.

On the other side, regulators and gun control groups are already treating the recent cases as encouragement to pursue more aggressive policies. A follow up segment of the same commentary on 3D-printed gun code suggested that This decision may encourage other jurisdictions to adopt similar restrictions, according to analysis of the. New Jersey’s victory could serve as a model for other states that want to limit access to ghost gun designs without running afoul of the First Amendment, especially now that multiple federal decisions have treated certain kinds of code as regulable conduct.

What comes next for the “code is speech” debate

The immediate effect of the appeals court ruling is clear: New Jersey’s ghost gun design ban remains in force, and publishers of 3D printer files for firearms face a higher legal risk if they target users in that state. Over the longer term, the decision adds weight to a growing body of case law that treats some software as a tool that can be regulated when it directly enables harmful conduct. That approach may influence future disputes over other forms of code, such as malware, ransomware kits, or programs that help users evade regulatory systems in areas like online gambling or cryptocurrency.