Well, I have seen that eotech mount. And, I understand that some people like to co-witness the sights. But, from my current experience with my PS90 and my eotech at 50 yards, I like seeing the entire target thru the window. I don't want the bottom portion blocked by the front sight.
We'll have to see. There is a RRA AR with a flat top and quad rail for $1010 MSRP. There appears to be no rear sight at all on it. It may come down to what I can afford. I may end up having to buy that one and then altering the front sight later. We'll see. But, I'd prefer front and rear folding sights like the ones on that S&W tactical AR.