Objectively, there is a much smaller demand for things like child porn than DIY firearms. For instance - here's a thread on a popular firearms forum that I freq

Objectively, there is a much smaller demand for things like child porn than DIY firearms. For instance - here's a thread on a popular firearms forum that I frequent that goes into great detail on how to cast an AR-15 lower receiver (the serialized, controlled part) using Legos and silicone as a mold: https://www.ar15.com/forums/ar-15/Fruity_Ghost___DIY_100s_of_ARs_cheaper__faster__gentler_/4-676733/ https://www.ar15.com/forums/ar-15/Fruity_Ghost___DIY_100s_of...? Note that that thread is three years old and has eight hundred replies, many of which are people making their own for fun.