I just know someone's going to freak out about this, so...
The files this is based off of are from shared GCFs. Anyway, on to the actual description.
It's Fixed. Go ahead and download.
I had been trying to get this to work for a long time. First thing I tried was changing attachments. Nothing. Second was editing the animations file. SCREWED EVERYTHING UP. Finally, I noticed that the animation events used to shoot in HL2 and HL1 were different. I just decompiled the model and animation files, added the required animations to the model file, changed the animation events, and recompiled. I was freaking happy.
Custom skins made for the HL2 Vortigaunt will work with this EXCLUDING those with custom models. They will fail if they use a custom model.
Also, this will NOT work with illegal versions of the game, and I will not help you make it work.
NECK GLITCH AHEAD
Yeah, the infamous "detached neck" glitch happens here. I don't even know, there's not much I can say about it, just be aware, the neck is all detached and crap.
EDIT: I'm happy, as this is back. I'd like to thank, and apologize publicly to Xero. After he trashed this, I said some rather mean things spoken out of anger.