Had the same problem with a pair of Ruger Frontiers in .308 and .358...no open sights. Had a local smith put a Williams standard ramp on one and a shortie ramp on the other... Both rifles use a XS ramp front with white line...stands out very well... I use the NECG Ruger receiver sight when using the scout scope.
Had another MKII stainless in .350 RM that someone had shortened the barrel to 19" and had a Williams front base put on and a NECG rear sight put on far enough forward that it would not interfear with mounting a scope.
I use the Leupold or Warne QD rings...
Bob
