Wilson claimed Britain's only shooting medal at London 2012 with gold in the double trap before taking a seven-month break from the sport and only returning to training two weeks ago.
And, despite admitting to struggling in practice, Wilson showed little signs of rust as he placed fifth in qualification before shooting the best in the semi-final to ensure himself of at least silver.
The 26-year-old came out on top in the double trap gold-medal match with Wang Hao of China while Davide Gasparini beat Italian teammate Daniele Di Spigno to claim bronze.
And Wilson said: "It was a new experience for me, there was some pressure on me as Olympic Champion. I struggled in practice, but by focusing entirely on technique I was able to get the best out of myself."
Wilson's gold in the double trap at the Al Ain World Cup comes just two days after Aaron Heading took victory in the trap to leave British Shooting high performance manager Tim Newenham overjoyed.
"This is significant success for Peter in his first competition of 2013," said Newenham. "He started and finished the qualifying rounds with perfect scores and held his technique and focus to record another perfect score in the final. What a boost for Peter and British Shooting."
© Sportsbeat 2013
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