Ok more money into the EBR, seeing as I pretty well have it figured that I am going to stay with larger scopes I have decided that the A2 front sight has to go. Because I really dont do mag dumps I figure that I can get by with a Magpul front sight (folding). It wont be getting hot enough to melt the way I shoot. The question is (and I searched the forum before I asked this) what gas block w/at least upper rail would you all recommend. I have the pin punches and have been searching for railed gas blocks, there are so many and what height do I need to shoot for? Thanks Again for letting me borrow from your experiences