Hi Joel
The pictures you found on
http://www.canadianmilitarypattern.com/Posting.html are for the rear sliding hatch on a HUP which is about 4'x4' and slides on rails.
What I think you want is this versions, the pictures attached are some that Bob Carriere sent me. To post them I've had to drop the resolution if you think these are what you are looking for let me know and I can post them to my web site at hi resolution so you can see the detail better. I'll keep looking for more detail shots.
Cheers Phil