Carl, that is a good question. If it is PG, as in O1 PG, then it is precision ground. But I don't know how close the tolerances are on the "Ground Steel". Maybe Aldo or Peter can chime in about that.
By the way, Peter, good to have you on here, but you need to grow the porn-stache!
By the way, Peter, good to have you on here, but you need to grow the porn-stache!