Um, well, you better be a silent professional if you're using the MM-1 grenade launcher.
I haven't even see a real MM-1 yet, and during training my platoon G-2 pulled a night hitch with some Rangers from Benning - those loons have some wacy stuff. (Ever seen a sawed-off M203?
) Also, the MAC-10, while semi-rare, is just as easy to aquire as a Mossberg 550. Our forward element teams issue that stuff to their point men all of the time.