Out of curiosity, what is a reasonably sized weapon for a Helix in this world? Would 50mm be considered 'assault rifle' ammunition for a Helix? Or would something larger like 70mm - 120mm? I just wanna get a good vision in my mind for the firepower these things are throwing out.

For reference, this is a [url=https://youtu.be/U0prcaXEwKU?t=23]50mm cannon[/url].

[url=https://youtu.be/FNGEWZxlE30?t=101]60mm cannon[/url]

[url=https://youtu.be/ix-5yGREcK8?t=314]127mm cannon[/url] don't let the title fool you.

I mainly just want to know what size weapon would realistically be killing other Helices, would would count as a 'heavy weapon' versus a 'small arm'.