Blue Shift Otis Model?

So I found this video:

I’ve been looking for this specific Blue Shift Otis model for a very long time. Anyone know where I can find it?

I know that the ORIGINAL version of the model was made by Ambient Impact for Half-Life Opposing Force; but I’m looking for Blue Shift specifically.

Founded in 2004, became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.