The Magdump is the magazine unloader component of the MagPump 9MM Luger Magazine Loader.
No, there is not an adapter for the MP5.
This is meant specifically for loading handgun magazines and comes with the following adapters:
"Each 9mm Luger unit includes a mounting base plate and six adaptable retainers to fit pistol models:
GLOCK, SIG, Smith & Wesson, Springfield Armory, CZ and Ruger."
The MagPump comes with six adapters. Additional adapters can be purchased and can be found here: https://www.opticsplanet.com/magpump-9mm-double-stack-magazine-retainer.html
This is meant specifically for loading handgun magazines and comes with the following adapters:
"Each 9mm Luger unit includes a mounting base plate and six adaptable retainers to fit pistol models:
GLOCK, SIG, Smith & Wesson, Springfield Armory, CZ and Ruger."
It doesn't come with an unloader "magdump" like the one below because they don't make one for all the different 9mm magazines. You have what you need to load with this piece of plastic.
https://www.opticsplanet.com/magpump-magdump-ar-15-magazine-unloader.html
Yes it does. You can see the adapters in the third picture on this listing.