Alchemist Vestigial Arm, Huge size weapons?

[That Porter Kid]

So... funny thought, the alchemist discovery vestigial arm gives the alchemist an extra arm that can wield a weapon... so if i take this discovery twice and have 4 arms could i wield a huge size weapon?

[Ximen Bao]

Short answer: No.

Long answer: You could wield a huge light weapon as a medium character, just like you could anyway. Nothing in the vestigial arm rules alters how oversize weapon restrictions work.

[Kazaan]

How would you swing such a weapon? You'd have 4 articulation anchors rather than just two. The rules account for up to 2 hands on a weapon. any category higher than that is considered "unwieldable"; regardless of how many hands you have. If you had only 1 hand, then the 2-h category would be considered "unwieldable" to you. Handedness is a relative term.

[Ross Byers]

I merged the threads on this topic.