Don't have a trigger gauge or Wolff springs. I don't know if mine is a PSA "premium" trigger or not, but it came with their MOE+ LPK.
The difference is immediately noticeable. Also, the Grip Screw Trigger Adjuster takes up probably 85-90% of the pre-travel.
The difference is immediately noticeable. Also, the Grip Screw Trigger Adjuster takes up probably 85-90% of the pre-travel.