I'm interested in this sight, but am uncertain about a few things. First, how close are the dimensions of the sight blade to those of a standard (fixed) AR front sight? I ask because some pictures I've seen around the web seem to show a short and stumpy looking blade that doesn't look quite right to me. See an example here from BCM's site: Other pictures more closely resemble a standard fixed sight in height, but still look a bit more "boxy" so to speak. Here: Second, if you have all the time in the world and are shooting prone or off a rest, how close can you come to the accuracy of standard fixed sights when using a set of Troy front and rear BUIS. In other words, suppose I shoot 2" groups prone at 100 yards with my A2 AR with a fixed rear and front sight. All other things being equal, can I expect the same using Troy front and rear BUIS with the same sight radius. Many thanks in advance for any responses.