Switch off your irony detectors for a few seconds, it might break otherwise.
My first thought was: Wow, that's something the world has been waiting for!
You can safely turn back on your various detectors.

I am an European citizen and live in a country where I'm glad that access to guns is far more restricted and regulated than in America. It's my personal opinion and I don't agree with American culture to allow relatively easy access to guns for virtually everyone. I don't blame you for this. It just feels scary for me.
Sure, we have crime and people get shot here, too. I don't know exactly if more or less, it surely depends where you live, both in Europe or America.
But here in my capital town I feel more safe to know that if someone's freaking out, he doesn't need to just open the drawer an pull out some guns and automatic stuff. Some people and criminals have weapons, fortunately they are scarce here and I'm happy with that.
I probably am exaggerating things a bit, so take it with a grain of salt...
Peace!
But still interesting that his selling did grow because of Bitcoin and he had chosen to add it to his online shop. Unfortunately this interesting topic was not much elaborated further...