I don't think it's overpowered. It's definitely a viable gun in both PvE and PvP, but overpowered? Nope. If you're just mad that you get killed by it in crucible then go practice and get better.
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This is just such an easy and careless answer though. People really do care. This would be in the top guns to nerf by the whole community.
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In crucible (which I'm assuming is what you're talking about) it is not overpowered.