Talk to the NPC and navigate: Services > Items > Resources > Shungite
Then all you have to do is modify your weapon using a weapon fodder and pick shungite as the material. Repeat the process until it caps at rarity 8.
You can do the same with modules.
Then all you have to do is modify your weapon using a weapon fodder and pick shungite as the material. Repeat the process until it caps at rarity 8.
You can do the same with modules.