Here's a RRA middie with an Eotech 551 on a LaRue Eotech base.
If you have a flattop , you really need a BUIS. This rifle has a GG&G MAD BUIS, flipup, dial -type aperature.
![Image](http://img.photobucket.com/albums/v600/jj762c/Mvc-174s.jpg)
You can mount the Eotech directly on the flattop but it sits a little low. The RRA Dominator flattop is a nice piece. I have used one and like it.
Heres another rig...
![Image](http://img.photobucket.com/albums/v600/jj762c/12-12-2005middiearmssightsdown.jpg)
an RRA lower, middie 16" with an ARMS 58M rail, PRI front folddown sight and an ARMS 40L BUIS. The Aimpoint CompM2 2MOA sits in a ARMS 22M68 detachable mount on the rail. If you go with an AImpoint, you might get a $10 spacer that will bump up the Aimpoint just above your iron sights.
J