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Increases the stats of custom mods attached to bowguns.

Multi-language

	English	Chinese (simplified)	Chinese (traditional)	Japanese
Skill name	Tune-Up	零件改造	槍械改良	チューンアップ
Deco name	Foil Jewel 3	精密珠【3】	巧緻珠【3】	巧緻珠【3】
Deco name	Foil Jewel+ 4	精密珠 II【4】	巧緻珠 II【4】	巧緻珠 II【4】

Skill info

Skill name	Skill description	Max lv	Skill effects
Tune-Up	Increases the stats of custom mods attached to bowguns.	2	Lv1. Increases stats of Silencer and Shield. If neither are equipped, Reload Speed +1. Lv2. Also increases stats of Long Barrel and Power Barrel. If neither are equipped, Reload Speed +1 and Steadiness +1.