As far as I undarstand, capsule component is used mainly to define collisions and transform of an object. Well, that seems reasonable if there is no pre-made or pre-calculated collisions. But in our case, both the tank and the turret already have simple collisions (way more accurate than the capsule component). So why are we using capsule component instead of making root component from base mesh?
Edit: Obviously doing it that way, we should also add turret collision to consider whether or not object got hit.