Can someone tell me what I did wrong?

[KommissarReb]

I'm trying to make a usable turbolaser turret for a map I'm making. After making it most of the turret disappears ingame, and all that's left is the base. When I get inside the turret spins like crazy and fires a fake laser beam instead of blaster projectiles like it's supposed to. I added a link to the file so you can tell me exactly what I did incorrectly.