None of the 1911s do, you can get the M&P line with a mag safety but most don't, I believe some of the 3rd gen autos do, and as far as I know all of the 22a pistols have them.

I personally wouldn't want one and the only gun I've owned that did have it was a 22a and it was easily removed. I can see why some cops like them, incase the bad guy gets your gun and doesn't know how to work it, there is a chance he will hit the mag release trying to get it off safe. For a concealed carry gun, the bad guy shouldn't know that you have a gun unless you're pointing it at him so it shouldn't come in play at all.