anschutz dovetail extension or riser?

[gszeto99]

I have a Walt Sinnott E5D rear sight that I would like to use on my 1907 anschutz. Anschutz and Gehmann sights seem to have a built-in sight dovetail extension that the Walt Sinnott does not have. I would like to be able to move the Walt Sinnott sight rear ward closer to my eye. Are there any dovetail extension/risers that I can use and which ones would you recommend?

Thank you

Gene