I know that this defeats the purpose of being discreet and it is not subtle at all. But that isn’t the point. As far as I can tell I have not found another example of someone suppressing an MP5K H&K Briefcase.

Sure the M11 briefcases allow for a suppressor to be mounted while still being concealed in the briefcase. But that is not an option for the MP5K.

I suspect this may actually be pretty quiet since all the bolt noise will be muffled inside the briefcase.

Have you seen a suppressed H&K Briefcase before?