I was going to suggest Black Magic. Have you tried Aaen and PSI? I don't know of any one making pipes for the 570, but there are lots of them made for the 600 which might be an option. The pipe builder could tell you if the 600 pipe would work.
I just got off the aaen wd site and they have a pipe for it. now if i can just find a silencer for it . thatnk you for suggesting this company i have been looking for a pipe for this sled for over a year now thank you.