Talk:Twin Vipers/@comment-202.156.13.10-20130506074736/@comment-184.23.128.142-20130506075918

None, if you level 2 vipers to say,,,level 30, then you get the mastery points from the single vipers. When you make them twin vipers, it starts at level 0 and gets its own mastery points. It doesn't gain exp faster/slower than any other weapon.