S&B PMII may still be the gold standard, but when it comes to left handed actions and 90 degree bolt lifts, the shine comes off the standard. Their are simply too many good optic alternatives to the S&B PMII line today to screw around with S&B and hope it works for you on a 90 degree left handed action. Think more like TT, or Minox, or Vortex, or Nightforce or Steiner M5. They all make outstanding scopes in the 5-25x56mm range that will not have you wishing you bought an S&B. Your knuckles will thank you later......