You don't need the exact material for a quality counterfeit bill. I don't think sufficient bill-like materials are any more scarce than the high-grade plastics these guns need, not to mention bullets and gunpowder.
> I don't think sufficient bill-like materials are any more scarce than the high-grade plastics these guns need
Actually, in the past that paper and the presses were hard to get undetectably. This is changing as more and more of the world achieves higher levels of industrial infrastructure.
