Gauss barrel...

[RiceisNice]

Created from magiteck parts (just like the rook and bishop), which is but machine enhanced with magic. It's true that it doesn't interact with other skills on its own, but simply hiding it for yourself should suffice. There's no reason to need to disable it for everyone other than a simple want.

Which brings us to the point of the thread. In an environment where BRD, AST and SAM, RDM can have unique secondary models and SMNs who can change their egi appearance to not only themselves but other players, why is MCH the exception for both when it comes to their aesthetics?

And even if you were to bring up the part about it being magitek, it's still constrained by the fact it's machinery and not actual magic, otherwise it's an outlier on it's acutal interactions when you look at other magitek items (such as the ironworks set or even the turrets as you mentioned), assuming the gauss barrel is magitek at all since it seems more like an actual machinery like most guns.