I don't own an AR at present, but I have an old 18" 870 on hand if unpleasantness occurs. If I need more firepower than the 870 I can always grab one of my .30 Carbines. The AR is a good rifle, I get to qualify with a M4A1 every year, but the 870 is more than enough for defending my acre of ground.
One of these days I will get around to getting another AR, probably a classic one. I'd like a pre ban Colt HBar with the bayonet lug, mainly because it's as close as I can get to the Colt M16A-2 I was issued. My old AR was an A2 Bushmaster, nice rifle, but someone offered me an absurd amount for it during the 2013 panic and I sold it.