If you get really familiar with the AR then you will be able to rapidly engage many targets and you also have the advantage of getting penetration through the kind of things people hide behind around American homes, you also get the ability to engage out to a longer distance if that arose.
For me the big advantage is 30 shots with quick reload and the ability to shoot, aim at the next, shoot, aim at the next, and do that as much as you can against what won’t be professional soldiers.
With 30-round magazines ready to go you can throw a lot of lead at them instantly, giving them confusing suppressive fire which can disrupt their nice mental picture of how they were going to proceed in handling your house.
The question is compound defence, a neighborhood unit, the portable carbine is definitive show of force that moves insane squads to greener pastures.
The shotgun with sporting clays trains the reflex of target acquisition and commitment. It is useful up close, it zaps the moral of next person in the doorway, but at the doorway things get bad quick.
The AR with steel plate trains killing the hoard moving to/away. With a sqad of AR shooters nothing less than a dozen can close the gap around a farm compound.
The 308, 300 and othe longer systems are to maintain the space between opfor and your lines. We heard of no successful in the long term from Hamas at holding anything. They were squads of children with carbines and a few RPGs.
The hand gun trains the last 5 seconds for the defender. If it gets to hand gun in the situation we saw, already lost as a defender vs a squad of children warriors. The shotgun extends that out by another 30 seconds.
Anyone with cover of their own house, an pattern rifle and 5 Mags in a pouch is an hour long problem at 5 bad guy to 1 good guy ratios.
The whole point is to make anyplace an easier place to be than your home while a war is breaking out. Drop someones battle buddy at the end of your driveway and it takes 35 minutes before they become effective again.
So kill at 400 yards or 100 yards and deal with PTSD for a lifetime... and commit to taking them out as they kill you at 20 yards and 10 yards. You might get very lucky up close, but unless you are just off of IDF specials missions you will not beat wacked out child army.
Where is Hamas footsoilders Mamma and Daddy? they raised some vile SOBs.