It was in one of his videos as was the house thing he made. I'm pretty sure they're for his zombie game (please correct me if I'm wrong Kraven)
And yes that is quite an amazing model...in fact I feel inspired to go mess around with Blender some more. I'm gradually learning how to use it and I must say if you put in the right amount of work and studying the end result is EXTREMELY much more worth your time.
That being said don't expect "work" to mean "oh I'll play around 7 times, read one tutorial and become a master." No, expect at least a month to get started.
My experience with Blender (and sorry for the long post) I have downloaded and completely deleted Blender a total of four times now because I would get inspired by some crazy good model, download it, not know a thing about the controls, mess around with the cube, and quit/uninstall. This went on for 2 months maybe and then one day I decided to sit down with pen and paper and read through the Blender Noob to Pro guide on wikipedia. I took notes, recorded hotkeys, and completed the exercises. Now I must say about half way after basic modelling lessons and hotkeys I burned out and stopped reading it. I let the info I learned sink in for about a week and then one day I opened Blender, got a reference picture of a gun, and completed a carboard cutout from a cube in about 50 min. I was so proud of myself
So again sorry for the long post but you've got to stress that you WILL have to work at it to get good.
Point made. Hope this helped!
dark peanut