My Kgun dealer is closed for the day and I have a couple of questions and thought someone on here will know. I don't have a trap rib to compare to and was wondering, Is the rib height the length of the barrel on a K-80 tapered flat rib (sporting) the same as the regular trap Step rib (trap) once you are past the initial step? I have been looking at all the pictures on the krieghoff site and it looks like they have the same height & taper, just the sporting rib is a couple of mm narrower. No information is listed for the height of the rib though. Also it looks like the ACS barrel is the same as the Pro Sporter? Thanks!