I don't believe the player models are accurate inside hammer. I checked the valve reference site and for example, it says the player model max size is 83 units vertical. I'm guessing the Heavy is the tallest. Medic and Sniper should be next but I threw a sniper model in my map and measured and it was 87 units. The reason I even first noticed this was I set a sniper model next to a fence and the top of the rail was at his mid thigh. No way. Somebody can comment on this?