I don't have one, but I'd like to point out that the recent issue of the Shotgun News has a two or three page blurb on them.
I'd heard the early ones didn't like 7.62x25 subgun ammo. Apparently, they were developed using new manufacture ammo that wasn't nearly as hot. I'm sure they've rectified this by now.
[Edited by Destructo6 on 05-24-2001 at 03:49 AM]