Stop the flow of legal guns? That's not going to happen - citizens in this country have certain constitutionally protected liberties and gun ownership is one of them. So try again. If you really seek to stem gun violence how about doing something so novel as actually prosecuting and locking up the relatively few who are misusing those guns? The term "buy-back" is quite misleading since the government can't buy-back something it never owned in the first place. Where Australia is concerned, that term is just a euphemism for forced turn-ins, a.k.a. confiscation. The Australian government actually forced decent citizens to turn in their lawfully owned guns under threat of prison time. How ironic that you would claim "I never said to make existing guns illegal," while at the same time supporting the confiscatory gun policies of Australia.