So Evva has awesome 3d animations of their locks including MCS. I decided to give it a shot and model/animate my own in Blender. Also wrote it up at the link below with nice renders of the individual parts. These locks are awesome; hope this helps out some folks to understand how they work. I'll be re-rendering in higher quality and re-editing it soon (the text goes by a bit too fast), but its still pretty neat.
http://theamazingking.com/locks.php#mcs
Direct link to just the animation:
http://www.youtube.com/watch?v=bNTqJtdmZOE