I was curious how many of you guys have an AR-15 as the primary home defense weapon? Also what kind of ammo do you use. I sure wouldn't shoot a FMJ in the house at someone, so I figure you guys must use a 45 gr psp or something that'll mushroom. When I bought my AR the salesman said that it might not be as reliable with non fmj rounds. I have a 9mm pistol as my home defense weapon, but was interested what you AR guys use.