From GrabCAD developer John Fall thank you for your work in this great community!!!

https://grabcad.com/library/h-k-mp5-2/details?folder_id=14027392

The complete model of the H&K MP5 will make a nice 3D printed model.It takes a while to load. I did attempt this before but this is a more comprehensive model. IGES file included. PLEASE PRESS THE LIKE BUTTON IF YOU DOWNLOAD THIS MODEL, APPRECIATED.