Fresh from his 50m Pistol silver in the World Championships, the Lucknow-based shooter completed a grand double as he had won a gold in the Commonwealth Games in Glasgow earlier this year.
The shooter, who serves the Gurkha regiment, was on target from the word go after moving into the finals even as compatriot Omkar Singh failed to cross the qualification hurdle.
In the finals though, Rai was tested by Vietnam's Nguyen Hoang Phuong, who had to settle for silver and bronze medallist Wang Zhiwei of China.
Rai accumulated 186.2 points in comparison to Phuong's 183.4 and Zhiwei stood a distant third with 165.6 points. This was India's second medal at the ongoing Games after Shweta Chaudhry's bronze in the 10m air pistol event.