I had this debate w/ my Firearms instructor 12 Gauge vs. AR for home defense. I was old school as my Dad had the 12 Gauge Pump as there were no ARs back then.
Gun instructor brought up a couple of points covered here regarding range and accuracy.
But his main one was overall length of the weapon. An AR is shorter and with the telescopic stock can get even shorter and you needs this in a home moving thru like narrow hallways.
Another point is AR w/ 30-Mag holds a lot more ammo and can reload faster with extra Mag
Convinced me.
While I don’t own an AR yet, I would have assumed the 12 guage better for the house between the two. Thinking through your comments on hallways and narrow spaces... assume the AR better.
But what about pistol vs. AR? In a situation where spaces are tight, possibly very close to the target, and adrenaline/fear whipping through me - would I likely have a tactical advantage between the two?
Especially in carbine.