When I said combat I meant it. I want a gun that will serve a purpose in a situation that is without rule of law. Some pretend it doesn't happen - but I've lived in it, and even though people are generally nice, police do not always come. In my situation there was lots of mud and dust and sweat, so I want something that's reliable.
Oh, one of those people. Got ya.
Then again I'd reiterate the fact that a shotgun or rifle in a true "WROL" situation is a better choice.
Any gun will fail with enough mud and dust in it. You want something really bomb proof? Find a used HK USP.