California sues major 3D-printing filament maker over claims it deliberately catered to ghost gun enthusiasts

The state of California has filed a lawsuit against 3D printing filament maker Polymaker, alleging that the company intentionally marketed its products to ghost gun enthusiasts, enabling them to create unserialized firearms.

The complaint, filed on October 5, argues that while 3D printing filament itself is not illegal, Polymaker's actions facilitated the production of regulated firearm precursor parts.

The lawsuit seeks to halt Polymaker's alleged practices and recover civil penalties.