>Your perception is not correct. To obtain a gun legally, you have to be over 18 and go through a background check, and you have to license the gun. There isn't much we can do about people obtaining guns illegally, just as there isn't much we can do to prevent the sales of drugs.
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>What would you recommend we do?

18? Father buys gun and son easly takes gun from bookshelf. That's not a solution. In Turkey you have to prove you're under a thread for have a gun.

Yes, there are illegal gun sales will but it will make more difficult have a gun. It's a thing. People will hide their guns. It will make an abnormal thing have a gun.