Is an AR-15 a good home defense rifle?

The AR-15 is one of the best home-defense tools for a trained shooter — light recoil, easy to shoot accurately under stress, and easy to add a light, red dot, and sling. Contrary to the myth, lightweight 5.56 often fragments and over-penetrates interior walls LESS than common handgun rounds. Set it up with a quality dot, a weapon light, and a defensive 5.56 load, secure it properly, and get some training. It is loud indoors, so think about hearing protection or a suppressor.