So only black markets on material goods listed in the constitution are futile to legislate against?

Because it wasn't long ago you were mentioning all sorts of products that weren't included. Where's your constitutional right to cocaine?

How about you just admit that you'll say literally anything to oppose legislation on guns? You don't have a moral/ethical/legal/intellectual framework to justify it. You're making things up as you go and damn the contradictions.

You can repeat yourself with this "you're not good at this" until your face is blue, but I'm not the one backing himself into a corner and tripping over every previous statement on the way there.