I've been given it again for just completing the story mission again on a character, may have been because it was the daily heroic mission though, worth a try just quickly running through it again
English
-
Maybe if you beat it and you don't have one then it does give it to you
-
Because I remember originally keeping just one and now I've accumulated one for each of my characters, the the pretty gun I equip when I chuck everything else back in the vault <3