Is it important to be able to dissipate heat from the barrel if you are not shooting full auto? I understand that there is a point long before barrel failure where shooter comfort comes into play. However, that issue aside, will accuracy be better served by a cool barrel as opposed to a hot barrel? Here is the reason for the question. While watching an episode of "How it's Made" they showed "Trane" A.C.'s being made and the "spine fin tubing" looked like it could be wrapped around a barrel and still fit inside a free float tube. I thought to my self " WOW That would be cool" no pun intended. But then I thought "Is that a solution looking for a problem?".So I thought I would deffer to the "experts" here. Here is the episode. The "spine fin tubing" is the first thing that they show being made. http://videos.howstuffworks.com/science-channel/37438-how-its-made-air-conditioners-video.htm EDUB ETA : not really talking about the tubing as much as the "spine fin" heat sink material itself.