I tell you what, even though Miami Vice was a disappointing movie, the shootout at the end is one of the most acoustically accurate I have ever heard.
i havent seen all of miami vice, but if the shootout you're talking about is as acoustically accurate as the Heat heist scene, I'd believe it. He nails all of his gun sound effects.
The training he made Cruise go through in Collateral was awesome. You can see Cruise's proper trigger discipline several times throughout the movie
The fact he gave him a USP also shows he knows quality when it comes to weapons