Board Thread:Theories and Speculation/@comment-34661853-20181111160651/@comment-26107879-20181117090504

@Nope

Mechanical? Please show me a single reference of Naruto's arm of having a single piece of machinery.

The Databook states anyone integrated with the cells of Hashirama have his regeneration. As far as I am aware, the arm is made of his DNA. That is why Naruto is listed as a user of his regeneration on the Regeneration Ability page.