Recently I took a range safety course to become an NRA certified Range Safety Officer for my gun club. Part of the instruction was to shoot and become familiar with a range of firearms including revolvers, semi-auto pistols, shotguns, and rifles. For the rifle shoot, we used AR15's and one of the owners said that his AR15 is his primary home defense firearm. I didn't say anything at the time, but it struck me as very odd that someone would choose this particular firearm for home defense (it wasn't even a carbine). I was curious as to whether other people here use an AR for home defense, if so, why, given all the other choices (e.g., pump 12 gauge)? Would love to hear commentary from others on how appropriate you think an AR is for this purpose.