wrote in message news
On Thu, 20 Jun 2013 16:52:32 -0400, "Eisboch" wrote:

Who and what determines "unsound mind" ?

790.23;

4. Has been adjudicated mentally defective or has been committed to a
mental institution by a court and as a result is prohibited by federal
law from purchasing a firearm.
a. As used in this subparagraph, “adjudicated mentally defective�
means a determination by a court that a person, as a result of marked
subnormal intelligence, or mental illness, incompetency, condition, or
disease, is a danger to himself or herself or to others or lacks the
mental capacity to contract or manage his or her own affairs. The
phrase includes a judicial finding of incapacity under s.
744.331(6)(a), an acquittal by reason of insanity of a person charged
with a criminal offense, and a judicial finding that a criminal
defendant is not competent to stand trial.

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So how is this accomplished without benefit of a background check, the
data of which may include pertinent information regarding the
"mentally defective" nature of the buyer or transferee?