My advice, keep it simple.
Flat top. Low profile gas block. Barska Red dot.
I do not like the red dot, and will soon change to trijicon due to battery and weight. There is nothing wrong with the Barska the trijicon is just better.
Whatever you put on it and no matter how "cool" it looks, remember, all the extra crap adds weight. If you have a wife and kids they will not be able to use it comfortably. "Cool" won't protect your house, and you can't always be there. Ask youself who will be firing this weapon and why.
This my youngest child, and AR in the photo. Now minus the vertical fore grip. She is 14 and has no trouble handling this weapon or the other one just like it.
