I am now using a EoTech on my RRA FlatTop (mid-length). While it is a great sight, I still want a BUIS so I could change to iron sight when necessary. I am now pretty interested in a Troy rear BUIS (My RRA has a fixed front sight), and hear many good things about it.
However, I saw in some forums that when using the Troy rear BUIS, you have to get a higher front sight post instead of the normal one come with the rifle since the center of the rear peep hole on the Troy is higher that on a detachable A3 handle, and the normal front sight post may not be high enough to get a proper sight zero, is this true? If so, I will buy a higher post together with the Troy rear BUIS.
Does anyone have any experience with the YHM flip-up rear BUIS, I also hear good things about them, and the price is also attractive.
Thanks,
Charlie