Talk:Fire (upgrade path)/@comment-83.253.170.213-20180604001739/@comment-4511886-20180605080014

You should be able to ascend it to fire. I believe ascension allows weapons from the breakpoint for that path (+5 or +10) and up by four. So your zwei should still be able to be turned into a fire variant as long as it's at +9 or lower. Otherwise, you have to revert it to a +5. Note that the upgrade level has no effect on the fire variant, so you'll lose all the large shards you put into it.