Kuwait shooter Fehaid Aldeehani captured the gold medal in Wednesday's men's double trap as part of the Independent Olympic Athletes team.
Aldeehani held off Italian Marco Innocenti 26-24 in the final to win the gold medal in his sixth Olympics. Briton Steven Scott grabbed the bronze.
The 49-year-old Aldeehani had collected two shooting medals in previous Games - bronze in the double trap at Sydney 2000 for the country's first medal ever, and trap bronze in London 2012.
Those two medals were credited to Kuwait but Aldeehani and eight other Kuwaitis are competing in Rio for the Independent Olympic Athletes team after the International Olympic Committee suspended Kuwait for government interference in sport.
"To finally get gold is very special," said Aldeehani, undeterred that he only made the final via a shootout.
"It's never too late. In the final God gave me the will to win. This is my day - it means everything. It was very tough today, but I was able to come through."
Wednesday's conditions were testing with wind and rain - but at least no dragonflies. The winged insect had possibly denied him trap and double trap gold medals at the 2014 Asian Games in Incheon, South Korea.
"It is nothing but bad luck. As I readied to shoot, a dragonfly came and sat on the barrel," he said at the time after finishing second in each event.
"That disrupted my attention and I missed. I could not believe that the same thing happened in the men's trap as well."