I don't have one but one of my buddies does and I've shot his several times.
Pros: It's a pretty neat looking little rifle. (I like it better than the actual AUG) It's just as accurate as most AR's. Shoots nice and smooth with little recoil. You can buy rails to put anything on it you would want.
Cons: It's heavy for such a small rifle. It's very picky about what ammo it shoots. And mags are hard to find as it will only use the MicroTech mags.