The sharkmouth_sentry.rar file you have requested: Skins / Players / Engineer / Buildables / Team Fortress 2: Sharkmouth Sentry Skin - 2.46mb is not available. Perhaps try browsing all files for the game Team Fortress 2 and upload any files you want to share or are missing. This is the only information we could locate:
This is a small replacement skin for the first-level RED Team sentry built by the Engineer class. It adds a sharkmouth to the barrel of the gun, making it more menacing, and it is slightly easier to see which direction it is pointing.