I am going to see my dad soon and we don't get to see each other all that often. He recently bought a CVA Optima .50and hasn't even shot it yet because he wants me to show him the ropes. I thought it would be a good idea to get him a gift so I thought about a scope. I know the Optima is drilled and tapped for a scope, but what style mounts? I couldn't find any info on the CVA site. Thanks.