This aluminum base and ring set is made to NATO specs and is a superb platform to mount any scope. It mounts to any existing picatinny 1913 rail, and you can buy additional ringsets to change scope tube diameters while still utilizing one base.
Our HD style picatinny handle mount fits on your AR handle but it has a 2" extension and features Stanag holes as well. No more are you limited to short tube scopes due to lack of rail length, and it is see through as well.