Indiana has a new expungement law that may be helpful to you in getting your civil rights, including your 2nd Amendment rights to carry a firearm, restored. You should contact an experienced criminal attorney for a consultation to see if you qualify.
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There are attorneys who tend to specialize in these kinds of issues. You may be able to find a few on avvo. Try the "Find a Lawyer" section on here and search the entire state of IN. I'll try to find a practice area that may be more suited to your issue so some more attorneys may see it. Bet of luck.