I have an NcStar 3x9x42 tactical scope I had on my Ar,but im wanting to go a different way like a red dot,but anyway here is a pic of it,if you want actual pics I can get them for you,and the rings in the pic is the same ones that comes with mine too.i'll take $40 plust shipping .I didn't pay the $150 for the scope,just can't remember where I got it,It was more lik $90.
http://ww2.cyberbay.com/htech/catalog/product_info.php?products_id=23