I have owned this rifle for 6 years; I got it for my son for Christmas. At the time, he was 10 and had been shooting my ARs, performing well with those. Just before Christmas that year, I saw this deal on gundeal.com, running for $400. It included a red-green dot, a 1-25 round mag, and a case – a sweet deal.
My expectations weren't very high, but we started dumping mags through this unit with multiple types of ammo that day, totaling 1000 rounds. I did clean and lube it up, as I do with all my units. Not a single issue occurred. I have an 8-inch gong and a 12-inch gong 100 meters from the bench, and whether shooting offhand or from the bench, it's on point.
With all that said, go out and get yourself some!