I've never fired an AR inside a house, but I can imagine if you did it without ear protection you are looking at permanent hearing loss.
The big problem with a shotgun, large caliber pistol or something like .308 is overpenetration. They will go through drywall like it's wet tissue paper.
Another downside with a pistol is the prospect that intruders might be wearing soft body armor.
There is no perfect solution for all situations. Like CO said, a shotgun or big bore pistol is probably best for in the home, the AR for anything outside. A lot of gun guys seem to like the High Point carbine, which fires 9 mil or .45. Only has a 9 shot mag though as i recall. Very inexpensive and apparently pretty darn reliable.
The S&W M&P AR seems to get good ratings for a budget gun. People get kind of crazy spending money on Ar's, but if you want mil-spec, a Colt is decent value.
The big problem with a shotgun, large caliber pistol or something like .308 is overpenetration. They will go through drywall like it's wet tissue paper.
Another downside with a pistol is the prospect that intruders might be wearing soft body armor.
There is no perfect solution for all situations. Like CO said, a shotgun or big bore pistol is probably best for in the home, the AR for anything outside. A lot of gun guys seem to like the High Point carbine, which fires 9 mil or .45. Only has a 9 shot mag though as i recall. Very inexpensive and apparently pretty darn reliable.
The S&W M&P AR seems to get good ratings for a budget gun. People get kind of crazy spending money on Ar's, but if you want mil-spec, a Colt is decent value.