Have a 580 Series Mini 14 - has a set of unmarked Ruger Rings on it with a 3-9x40 scope - does anyone know which height these are ?? Best I can see on the internet they are either Medium or High according to who you find - Looking to mount a 3-9x50 scope so will need higher rings and am unsure if I need a Ruger #5 or Ruger #6 heights - any help please :D
