I don't know if any of you have seen Turret Week by Zachariah Scott, but I had recreated all 13 turret skins (seen in the official trailer and elevator movie) for him to use. (See what I'm talking about here)
I released the model for other SFM users to use in their projects, but you map makers may be able to use it too. I'm not entirely sure as I'm not a mapper. It works exactly like the normal turret model- the only thing different is the 12 new skins.
More info + download in the description of this video. Cave Johnson voiced by Corey "Voxman" Snow, AKA Jimer Lins.
http://www.youtube.com/watch?v=LZXl-DCvZxY
Let me know what you think. 
PS: I know there is a Community Releases forum, but I figured here would be more appropriate because of the video. Move it if you'd like.
