Because of the related web-pages and comments on them, it appears that these are converted Glock 17s. I've sent you these two video's via e-mail. Others can try the following links.
Converted Glock 17 (full auto) video is about 3 megs.
http://www.scars.com/SCARS/Images/fssgall.mpg
Go to this page, and click on the glock about mid-page for the other video.
http://www.firearmsid.com/AFTE2000/A...%20Tuesday.htm
And here's a page with several other full-auto video clips....including an American 180 (.22 rimfire).
http://www.araby-dalbo.com/users/119...videopage.html
And another,
http://www.gulfcoastarmory.com/mgvids.html
Looks like fun!!! But I couldn't afford the ammo!!