Here is an old thread on it:
http://castboolits.gunloads.com/show...al-9x39/page2&
And here is video posted from some shoot down in Georgia:
https://www.youtube.com/watch?v=WboIXXvY3zc
fast forward to about the 2 minute mark.
Language may Not be Suitable For Work...just an FYI...
I think Wolf or Piedmont cartridge is working on making AR uppers for it.
Since it is such a fat, slow round...subsonic...used by the Speznatz, it would be ideal for casting heavy boolits for it.
EDIT: here is a Larry Vickers video on the "AK-9" also:
https://www.youtube.com/watch?v=I_8jfMBMtVw