Can someone point me in the right direction? My budget is under 200 and needs to be 1.5 inches above the scope rail (XX high). I need rings to be made out of aluminum and not steel because I'm sure most of my pcp rails are aluminum. I've been told you should always stay with the same metal and not use steel rings if mounting to aluminum. I don't really want the one piece mounts because I've found they can be limited for eye relief. Two piece mounts are just more versatile.