With this hand cannon you could use the variable but I have Leupold and Burris fixed powers on my handguns. I would either go with a Leupold 2 power or 4 power fixed. I like the field of view with the 2x and I suspect the main use for this gun will be hunting. Go with the 2x
Btw you will need a rugged scope and the Leupolds usually hold up well.