One thing I don't see presented is the effectiveness of the AR style rifle for home defense. A 9mm FMJ will damn near shoot through a home of modern drywall construction. The .223/5.56x45 will fragment and not keep penetrating through multiple interior walls. It's also a compact platform that's easier to navigate interior structures as well as being a platform for lighting and other accessories. My wife is also able to use the same rifle since it has the collapsible stock and is able to accommodate her.

