you can never say never or everyone.
however, those so inclined can easily find what they want on the black market.
i think back to the illegal boxes that stole cable tv years ago. a lot of people knew someone who had one and to get one you just asked.
same thing today, a lot of people know someone who does drugs and all you have to do is ask and you have your own source. those who sell drugs will sell you a gun or put you in contact with someone who will.