I have one of their earlier rifle models, but haven't fired it yet.
The things are VERY well built. In fact, one can argue that they are OVER built, since they are anything but lightweight.
I have heard and read little other than praise for its accuracy and reliability. Some problems have been reported (such as the barrels launching off the front end in the very early models) but many of those have been tracked back to improper reassembly by the owner. Modifications and improvements have been made since mine was purchased (back in 2001).
A lot of the gripes you hear ar AR-types who think it's too heavy, or too expensive, or whatever.
The times I've contacted the company for questions (both via e-mail and phone), I have gotten quick, accurate, and VERY curteous answers.
If you haven't looked there already, try the following board:
[url]http://www.biggerhammer.net/m96/[/url]
The bottom line is, if you like it, and you can afford it, you will likely not be disappointed. It's definitely more expensive than a quality AR, but it's decidedly different (I, for one, prefer gas-piston to gas tube). It's also modular (if you're into that kind of thing) although the "kits" often cost as much as a regular AR.
There it is. Good luck!