If you don't have an AR15, you need an AR15. Know how I know that? Because government doesn't want you to have an AR15 (neither do the government-supremacists). I was told, decades ago when I was a young adult, that any time government says you don't need X, you should go out and get X as soon as possible, because that's probably exactly what you need. I might be wrong, though. Maybe an AK-47 or an SKS would be what you need.