Forget the one star reviews - Sharps Bros. Upper Receiver Ar-15 Billet W/dust Cover

Sharps Bros SBUR03 is a great design. Sad to see them discontinued, but I get it; making the uppers compatible with more rails. The people with one star reviews are just ignorant. If you have an issue with the fit then contact the manufacturer first before writing a review. You cannot say their machining is inconsistent after buying 1 upper. And if the reviews were read before purchasing, although just looking at the BILLET upper would have said it all, there would be no reason to complain about hand guards not fitting. I would snag one of these up while they are still available if you plan on using an SLR rail for your build. Matches up very nicely.