I've got one and am VERY happy with it.
The only downside that I have seen is that dealing with AXTS was a little frustrating... they seem to be a pretty small shop and had some problems with one of their machines which in turn delayed production of the (AXTS-specific) mag catch.
The product, though, is absolutely top notch. I don't have a current need for another AR 15 lower, but if I did, I'd call AXTS; if I could buy one of their 7.62 lowers today, I'd do it.