There are 2 main issues with the Sentry Buster materials:

1. The Über effect doesn't show up. This is noticeable when the Buster is in the robot spawn area.
2. The naval mine part of the Buster doesn't get Jarate'd

There is not RED variant also, but that's not important. However, since community MvM tours are constantly promoted and I've seen RED Sentry Busters, I created it.