re: #11 Quoth the raven, Covfefe.
Frothing wingnut rage in 3…2…1…
Rick Wilson has - quite sensibly, I thought - been pissing all over the idea of 3D printed guns, since the parts that you care about - barrel, action, etc - have to withstand ungodly pressures and temperatures, and 3D printing doesn’t even make strong plastic things.
Now, matter transporters/replicators - THEY will pose problems.