I did just look at them again and I see what you mean. They are rounded a bit and if you look at just the muzzle, you can see the shape better. I looked in the Type I and it seemed as if the lands were sharp rather than humped. It is hard to see a difference, even when knowing what to look for. My Type 99 is chrome and not worn at all, the Type 38 is worn a bit more as it's a LOT older. The Type I looks hardly used.