How long should Arenas be suspended?

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Gilbert Arenas has admitted storing three unloaded guns in his locker. He may or may not have "pulled" a gun on a teammate during an argument about an unpaid gambling debt. The NBA is sure to suspend Arenas, but how long do you think is appropriate. I bet they give him a month. Do the Wizards keep him or try to trade him? What type of legal punishment do you think he will get, if any? I would like to know what you think.