You just don't know because you have no interest, if you had an interest you would know. Druggies know where to get drugs and preppers/criminals/cops know how to make/buy a gun everywhere on earth. Tech people, by this line of thought, should never have a censored internet, but you would be surprised.
Guns are 500+ year old technology at this point, manufacture is possible anywhere, as the industrious artisans of Yemen and Northwest Pakistan have shown.
I used to have the interest, and even used to participate in those circles, as I sold drugs when I was younger. Plenty of guns around those circles no doubt, but none of them would sell guns to random people, for obvious reasons.
But this was all in countries where guns were and are outlawed, which does make it harder to acquire guns, since those countries don't suffer from the problem of everyone and their mother having a gun, school shootings and all the other jazz that stuff comes with.
It still isn't "easy to get illegal guns" in those countries, even though it's much easier in other countries that are a bit behind the rest of the world when it comes to safety.