i have a very early production version chambered in .222 Remington (YES you read that correctly, .222). It is reasonably accurate, and reliable. It is however a safe queen, destined to be a part of my kid's college funding plan.
I also have a much newer Ranch version in stainless, with a folding Choate stock that is very solid and durable. Coupled with a Mini Scout Mount, Leopold 2.5 IER optic, quality sling, and factory magazines, it has proven 100% reliable, and fairly accurate as well. When I want a rapid-fire carbine, I prefer it to the AR platform, it works well for me.