I just received a 0.052" front sight post that I ordered from Bushmaster. Unlike the stock sight post, it is not square (when viewed from above). It is roughly 0.07" in one direction and 0.052" in the other. Also, the top of the post is not cut perpendicular to the threads. Rather, it slopes slightly. The end result is that, front sight adjustment requires full turns in order to get the correct sight picture, instead of the 1/4 turn that the standard front post is capable of with the same sight picture.
Is this normal, or is the post machined incorrectly? I guess I can set my zero with the front sight close, with a good sight picture, and then make up the difference with the rear sight.
Any thoughts or experience?