Unfortunately, it is not. It is an aluminum section which already consisted of three parts and was sleeved twice. I used a carbon look sticker to cover all holes and rivets. That helped the look and the watertightness but well, guess it doesn't matter anymore...

I wonder why the mast sections we know always feature the same wall thickness around the profile? Wouldn't it make sense to have more material on the sides and less material front and aft? I guess the Taipan 4.9 section has kind of stringer reinfocements at the inner sidewalls for similar reasons...