Hey Sjizzle, just don't look to much in damage menu, damage for periscopes (and some other equipment) is not property calculated at all. As periscopes loosing HP , speed of elevation will gradually slow down, from minor drop to large drop, and finally you will lose ability to rise the scopes and their model will be removed from the game. Yet , you'll still have options to look trough them but without elevation capability, not much use of it...
UZO is a bit different...Probably because of the camera controllers. For now, just try not to select it after it has been destroyed...