any clues why he has so much fear? sometimes it’s just the anti-gun brainwashing, but sometimes these things have a root in some experience. If you knew what, there might be a time when that conversation could be opened up and possibilities might change.
Not saying it will happen, but sometimes when you can understand and be empathetic with another person’s pain it touches them in a way which sets change in motion.
And… @Patrick47 may be right, it may be all about parental control. But… there may be another root in there somewhere.