Do you notice any creep with that reg. What does it come set at. If you substituted a Huma reg with gauge hole in place of audrius reg and gauge block I wonder if plenum volume would change.
Shawn. What spring did you use. I have a shorter spring in the kit and he included a 12.5 spring. The 12.5 spring is longer but I think softer. I don't want a hard cocking gun. Confused which spring to use. All the parts look good tho.