Hey patriot. Welcome to the board. I've got a couple of AR-10 carbines (16"), and they're more than fine for the "urban (around the home)" type of environment when it comes to accuracy. With that being said, I hope that I never have to pull the trigger in that scenario. Everybody would be deaf and all the windows would be blown out.
Now for CQB.....I've just finished building my 12" AR-10 SBR..................just in case.