[lepton]

The AR-15 is a basic, versatile light rifle, which is capable of being effective in a variety of situations.

The attacker gets to choose what they bring, and can tailor their tool to their plan. The defender brings what is available at the moment.

[golux]

Nope. I was trained on AR variants but if I am in a home defense situation it's a Mossberg 500 loaded with 00 and/or the trusty .38 / .357 revolver. When your heart rate is high, confusion may be an issue, and it's a life and death situation, you do not want a jam, a light round, "weapon status" or "sight" issues.