AUG is an incredible piece of machinery, complex as well...After looking at a cutaway of that thing I had to take a nap.
Question is how long will that AUG hold up in his possesion? And does he have the parts to keep that thing functional over a long period of time.
As for how they got it, the back channels are always open, in more places than not in the world, if you want it, you got it,.... all being for a price.
"This conjunction of an immense military establishment and a large arms industry is new in the American experience"- Dwight D. Eisenhower , Jan 17,1961.