This is my take on CVA stocks.
Wolf........Only one stock available, and it's for the open sights. You'll only have a chin weld with a scope.
Optima.....Regular stock is for open sights, and too low for a scope.
Optima......... TH stock is made for a scope, and too high for open sights.
Accura.....Regular stock is made for open sights, and too low for a scope.
Accura.....TH stock is sort of a compromise. Works with open sights, and a scope, but isn't ideal for either.
Accura MR.....It uses the Apex stock, and is made for a scope. Way too high for open sights.
Apex.....I've never owned an Apex, and since the MR uses the same stock, i'm going to guess it's made for a scope.