I don't know if an AR rifle would be my first choice for CQB, esp. in the house. I'd use an AR for home defend if I had too, but the useful range of a cheap laser on an AR is argueably nothing like what our soldiers see in the sand box. Probably more important is a good white light so you can confirm the target, if you have to point the rifle at anything in the house. (Edit-a short barreled AR is another matterfor CQB)
The racking of the bolt will have the same psychological effect as a laser bead I suppose.
But hey and AR is like a 911. It's a personal relationship between the owner and the equipment. Load it up with what you want
