If you are referring to a scope like a rifle scope, there are a few different ones on the market. BSA makes a red dot scope for bows that comes on an HHA sight bracket. Holographic also makes a scope for archery. I have set up the HHA scopes for a few hunters. They are very touchy to get set up. Never set up any of the holographic sights. If you have an archery catalog for Cableas both sights are listed in it, I think.