Extension to a manual Caulk Gun (or as in my case a pneumatic caulk gun)
I read about someone that used Brake Pipe/Brake Fluid Pipe to create an extension to a caulking gun. So I tried it myself and was happy about it when using it for the Pro Seal / Tank Sealant. This solution helped a lot when trying to get to the narrow parts of the vertical stabilizer for instance. Maybe will I use it again down the line.
Feel free to watch the video about what I did and how.
Caulk Gun Extension