The shooting happened about 8 a.m. outside his home, according to Monroe police.
Investigators believe the man thought he had unloaded the handgun, removing its magazine, Monroe police spokeswoman Debbie Willis said. He was adjusting the gun in his waistband when it fired.
His brother drove him to the hospital.
Police have forwarded the case to prosecutors for review. The man did not have a concealed pistol license.
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