If any of you actually have tried to maneuver around your house with an AR/ Shotgun/ or anything with any sizable barrel, you're going to realize real quick that's not going to be real easy to clear your house with unless you have a larger home with an open floor plan. For me living in a Lakewood house, there's no way I'm clearing my house with a rife or shotgun, it's just too big. I've practiced doing so and barrel length makes it real awkward, I cant pie the rooms out like I should. Clearing my house with a handgun is much easier, faster and more efficient and I take less risk doing so as.
Handgun for me in home defense, FNX40 with a light, specifically. Same thing as Jim has just in .40 cal.
Get a .22lr to shoot rodents.