It's a random exotic drop. Do activities which have a higher change to drop exotics (such as Nightfalls and Raids), or wait until Xûr is selling it.
English
-
Sweet the and big ups on the work in the last few days seems like you all have your Hustle & Flow back . The game works better over all with in the last 2 days. Could grimm in the future be excess able in game?
-
No idea if it will be accessable in the game. I don't believe that will be implemented within Destiny 1. Note that I am not a Bungie Employee, so I don't know for sure.