I got it at level 23 but I'm not sure where, I don't think it was a quest. I think I got it as a drop somewhere as it was just in my inventory without me clicking a quest reward that I remember. Was lucky to get a Law too when I was around 18 or so. These two items really change zer0 melee class into an entirely different and viable melee class, exactly what he should be from the start. Sad that you have to have these items to play the class.