The MP7 is not a gun you'll likely see in your local gun store it is a gun that is currently only available in select fire (Full Auto) and currently is only available to licensed dealers, law enforcement, and the military in the United States.

Many longtime players of the franchise may notice that the Vel 46 here in Warzone and Modern Warfare 3 is the same as the MP7 from the original MW3. As a gun, it's one that's great for a run-and-gun playstyle and one on the upper end of the spectrum when it comes to rate of fire.