Alright, I'm just going to have to stop - because this is a lack of knowledge of how the mechanics of firearms work that I'm trying to argue against. You can take the opposite side of the argument, that's fine.
1. No solider would prefer to shoot on auto unless there are specific applications that are not seen in "urban" scenarios. Period.
2. The "extra" benefit of those minimal situations from use of full auto is no where near worth the extra work in acquiring guns capable of doing that. 99.9% of applications a criminal would need are just as easily solved by a semi-auto application.
3. Because there is no real demand in such application, there is no supply of similar. If there was a great demand for automatic weapons in urban scenarios with criminals, they'd get them. They don't care about a law stopping it. Organized crime elements would provide for them.
Its really that simple. Feel free to have the last word on the semi-auto/auto subject.