The gun appears to be a Colt MK IV/Series 80 .380 auto, 3-1/4" barrel. That's one small gun, easily palm concealed. I question why anybody would wear an ankle holster if they didn't have a gun. The wife repeatedly stated that he suffered from a TBI and had just medicated. So he was taking both prescription and non-prescription drugs to ease the disorientation and confusion associated with his TBI, and she let him carry a pistol around?