I live just a few miles from Rock River Arms. They’re great to deal with and my 20” heavy barrel upper is a tack driver.
I have a Rock River Arm AR, I like it, seems to work just fine, and as far as accuracy, well I acknowledge I’m the limiting factor there. I just don’t get as much practice as I need. I used to be a well above average marksman. Now I’d say average on one of my good days.