The Leviathan's guest "Make bows, not war" is bugged. When you are on the step to complete "The arms dealer" mission it says that "[u]requires[/u] [u]season[/u] [u]8[/u]".
For the people that havent bought season 8 pass and bought 9 and thought they could get the bow and wanted it and thats why they bought it its just not fair
[b]BUNGIE SHOULD FIX THIS[/b]
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The bow was season specific... you are out of luck..