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- 164
Link to civil complaint PDF
Case Summary
What it is: On October 5, 2026, the San Diego County Counsel sued Polymaker LLC, a 3D printer filament maker based in Texas, in San Diego Superior Court. White & Case and the Giffords Law Center are co-counsel. The suit is brought in the name of the People of California and has one cause of action under the Unfair Competition Law (Bus. & Prof. Code § 17200), under both the "unlawful" and "unfair" prongs. These are allegations only, and nothing has been decided.
Core theory: California defines a "firearm precursor part" to include an item marketed or sold to the public to become the frame or receiver of a functional firearm (Penal Code § 16531(a)). The People argue that Polymaker's filament qualifies because of how it is marketed, not what it is. They compare it to Ghost Gunner's "AR-00," a plain aluminum block that Cal DOJ treats as a precursor part. The complaint states it does not seek to ban filament sales generally.
Key allegations: Polymaker sells a "3D Print General" creator spool, made with gun-printing influencer Sean Aranda. It is branded with the slogan "Come and Make It" and comes in flat dark earth.
- Polymaker sponsored Aranda after YouTube demonetized his channel, then hired him as Head of Customer Experience in December 2023.
- Polymaker pays affiliate commissions to gun-printing influencers and to CTRL+Pew, a defendant in a separate California suit over distributing digital firearm manufacturing code.
- Its product pages show printed firearms and gun accessories, including a customer review photo of a printed pistol frame.
- Its wiki recommends J-B Weld as "popular in functional applications like 3D-printed firearms."
- Its official Reddit account recommended specific filaments to users asking about gun building.
- Polymaker has a California nexus through imports at Long Beach and Los Angeles (about 34% of its imports) and California-specific compliance pages. The local tie-in is a May 2026 San Diego Police arrest of a 16-year-old whose workshop held Polymaker filament, four printed handgun frames, and machine gun conversion devices.
Alleged violations: Selling precursor parts (Bus. & Prof. Code § 22949.62; Penal Code § 30400). Knowingly facilitating unlawful firearm manufacture (Civ. Code § 3273.625; Penal Code §§ 29186, 29180(f)). Failing to maintain reasonable controls under the Firearm Industry Responsibility Act (Civ. Code §§ 3273.50–.51). The "unfair" claim is that the harm outweighs any utility and undermines California's ghost gun laws.
Relief sought: Disgorgement of revenue from the alleged practices, civil penalties of up to $2,500 per violation (treating each day of marketing as a separate violation), injunctive relief, and attorney's fees and costs.
Case Summary
What it is: On October 5, 2026, the San Diego County Counsel sued Polymaker LLC, a 3D printer filament maker based in Texas, in San Diego Superior Court. White & Case and the Giffords Law Center are co-counsel. The suit is brought in the name of the People of California and has one cause of action under the Unfair Competition Law (Bus. & Prof. Code § 17200), under both the "unlawful" and "unfair" prongs. These are allegations only, and nothing has been decided.
Core theory: California defines a "firearm precursor part" to include an item marketed or sold to the public to become the frame or receiver of a functional firearm (Penal Code § 16531(a)). The People argue that Polymaker's filament qualifies because of how it is marketed, not what it is. They compare it to Ghost Gunner's "AR-00," a plain aluminum block that Cal DOJ treats as a precursor part. The complaint states it does not seek to ban filament sales generally.
Key allegations: Polymaker sells a "3D Print General" creator spool, made with gun-printing influencer Sean Aranda. It is branded with the slogan "Come and Make It" and comes in flat dark earth.
- Polymaker sponsored Aranda after YouTube demonetized his channel, then hired him as Head of Customer Experience in December 2023.
- Polymaker pays affiliate commissions to gun-printing influencers and to CTRL+Pew, a defendant in a separate California suit over distributing digital firearm manufacturing code.
- Its product pages show printed firearms and gun accessories, including a customer review photo of a printed pistol frame.
- Its wiki recommends J-B Weld as "popular in functional applications like 3D-printed firearms."
- Its official Reddit account recommended specific filaments to users asking about gun building.
- Polymaker has a California nexus through imports at Long Beach and Los Angeles (about 34% of its imports) and California-specific compliance pages. The local tie-in is a May 2026 San Diego Police arrest of a 16-year-old whose workshop held Polymaker filament, four printed handgun frames, and machine gun conversion devices.
Alleged violations: Selling precursor parts (Bus. & Prof. Code § 22949.62; Penal Code § 30400). Knowingly facilitating unlawful firearm manufacture (Civ. Code § 3273.625; Penal Code §§ 29186, 29180(f)). Failing to maintain reasonable controls under the Firearm Industry Responsibility Act (Civ. Code §§ 3273.50–.51). The "unfair" claim is that the harm outweighs any utility and undermines California's ghost gun laws.
Relief sought: Disgorgement of revenue from the alleged practices, civil penalties of up to $2,500 per violation (treating each day of marketing as a separate violation), injunctive relief, and attorney's fees and costs.
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