Wild West Guns makes a heavy-duty steel ghost-ring sight that is fully protected from bumps with high sidewalls that uses the two back scope mount screw holes, its a nice compact sight but not cheap (though well worth the cost),. they also have a nice fiber-optic front blade sight that can be purchased as a package. I use this set-up on my 450 Marlin Scout rifle, doesn't interfere with the scope use, quickly pull the scope and the irons are already mounted. They don't provide a lot of adjustment so front sight choice is important. Would work really well with a small Redfield or other brand front globe sight also.
Phil
