This one says ATI and costs about $100. If it said one of the other names, it would cost about $180 - unless it said a four letter word - then it could go past that amount at about 4,000 fps. Can''t say that I see much difference, except the money in my pocket. It does everything it''s suppose to do except impress the folks that are more impressed with the name than cost or performance. Tie this in with a fair priced carbine kit and you got a pretty decent AR for a lot less than four letter word wants. I don''t believe I''d stand back on taking it anywhere I''d take any AR I''ve ever shot, and I''ve shot a bunch of them. So to review what has been said : good -cheap. Any questions ?

I used this to build a new rifle and everything went togeather fine. good stuff for 100 bucks.