So it seems the legal question is “was polymaker advertising their filament specifically for printing working firearms?”

Them having a couple military style colors for printing toy guns seems pretty far from a specific gun use filament. I was expecting a specific blend of herbs and spices specifically for withstanding the rigors of shooting real ammo or something, not a fucking color that is “military”.

Also, good luck trying to probe that they used specific advertising channels to market directly to the ghost gun groups. Flimsy reasoning at best.