[Maikito]

Well I'd like for it to do -something- to the weapon, since it's made of a different material and takes more effort. Perhaps it could cause some sort of cosmetic effect on the weapon if all the attachments are of the same material? Or on the character? If not that, then there's little reason to make customization parts out of anything but iron save for maybe exp.

OR better yet. of all the materials of the weapon are the same alloy as the weapon itself, maybe that would grant it a statisical bonus? A very slight one? The amount of effort and materials it would take to put into it would maybe perhaps balance it out then? If not that, maybe when they're all a certain material, it would change the color of the weapon's name in battle?