Britain had never won a medal in paralympic snowboarding before Friday's event, when Ollie Hill's first run of one minute and 10.45 seconds was enough to score a podium.
Fellow Brit and teammate Owen Pick finished in fourth, narrowly finishing behind Hill by just 0.19 seconds.
It was a remarkable finish for the 32-year-old, who was making his debut at the Games in Beijing.
Following his success, Hill said "It was important to put down a good first run because it took the pressure off a little bit.
"I wanted to push for the gold but I felt the second run was a bit slower and the snow was caving in a bit.
"I can't really sum it up right now other than I am absolutely stoked.
"I said earlier in the week I felt I had a bit more confidence in the banked and we have proved it today."
Hill started snowboarding aged eight, and also shared a passion for motocross during his childhood.
However, after being involved in a car accident in 2018, Hill had his right leg amputated below the knee.
He's relatively new to the Olympic team, having only joined the GB Snowsport programme in summer 2020, but in such a short time Hill has shown his talent, finishing fourth in January's World Championships.
Now having added an Olympic medal to his cabinet, Hill topped GB's previous best record in the snowboarding - James Barnes-Miller's fifth-place in the 2014 Olympics.
Gold went to China's Sun Qi (1:09.73) with Finland's Matti Suur-Hamari winning silver (1:09.98).