I am not aware of anything that would prevent you from doing this, however, to be safe you may want to ask an attorney. I did a quick search of "Finance + handgun" on the Illinois General Assembly's site and didn't find anything, but I would not hang my hat on an internet search.
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It's not that I take life for granted. It's only that the good won't make it. Innocence dies, while Villany Thrives.