I have one of these in 3-9X on my AR.
This is about 73% off retail.
http://www.natchezss.com/product.cfm?contentID=productDetail&prodID=XRTG1410005&src=ba681
This is about 73% off retail.
http://www.natchezss.com/product.cfm?contentID=productDetail&prodID=XRTG1410005&src=ba681