the AUG look a like is the MSAR STG-556
I can't remember for sure but I do believe it's actually an improved version of the semi auto Steyr
Microtech the knife maker decided to put them together.
http://www.msarinc.com/home.html
here's a review on them
http://www.thefiringline.com/f...76999
they usually get pretty positive reviews...but I think for the money I'd probably get nice AR and shoot tighter groups with it and have a huge aftermarket of parts and accessories.
I can't remember the user's SN that posted it up...but it's in one of the gun threads in the Great Outdoors forum.