The Vietnamese pair qualified for the final in third place with 626.6 points before producing a winning performance of 497.8 points to claim the title.
The victory brought Viet Nam's gold medal tally to six at the tournament, where the team has also collected golds in the women's 10m air rifle, the women's youth 10m air rifle, the women's 10m team air rifle, the men's youth 10m team air rifle, and the women’s 25m team pistol events.
They also pocketed nine silver medals, three bronze medals and set four records as of June 9.
The championships, held in Chinese Taipei, run until June 12.