[Vince Ferrer]

Before going further I will admit only slightly more than basic knowledge here. But how many recyclable plastics in common use have the structural properties needed for durable (even short term durable) mags and other gun components? And how many people have access to the equipment needed to recycle said plastics into

"Here are the two most common plastics for these types of printers:

Acrylonitrile butadiene styrene

Polylactic acid

The gun, receiver, and magazines that Defense Distributed has created were I believe all printed in ABS plastic. It is very common. The recycling equipment you can build yourself for a few hundred dollars.

[Norm Lenhart]

Well that definitely changes the situation ;)

If literally common plastics will work, They are in a hell of a fix. Because any code in the printer to ban shapes will be hacked and there is no way other than criminalizing/confiscation the printers or ownership to stop gun part printing.

Which is the very same failure as gun laws that caused the whole mess in the first place.