Does anyone know how many grooves are in the Noveske stainless steel barrels and are all the stainless steel barrels that he makes have the same amount of grooves? Are all 7 twist barrels identical except in length and contour? I am trying out a barrel for the first time on a build as i have heard great things about them of their quality and accuracy so i am thinking i may use another in a different length and contour for another build i am doing. I would like to get a AR blank from a quality barrel maker and have it turned and done to my specks but it just seems to be a hassle getting 1 and then all the shipping back and forth if you can just buy a high quality finished barrel ready to be dropped and fitted in to your bolt and be done with it. I wish a vendor or vendors would carry blanks for AR builds.