just remember that you usually get what you pay for. If it's asdvertised as the same as a $1500 AR for only $600, be suspicious of it. Rock River does have some great packages with the popular accessories on it that is worthwhile. Others as mentioned bfore are LMT (my preference), S&W, Colts (I think that you pay for the name), Sabre, and Daniel Defence. Look around and call the cmopanies, they'll send you a catalogue for free. Ask others at the range why they bought that brand and what they think. If you do your research, you will not be disappointed.