MOA bases for AR rifles...

[fixin]

I use the Burris PEPR, and Warne. I like them both.

I second this gentleman. I have the warne on my 5.56 gun and have been liking it quite a bit. The gun has taken a few spills recently and is still holding everything in. The burris I've had for 5 years now and has ran like an absolute champion, well worth a look depending on your uses.