Firing a 2 inch Gun at 12,500fps - The Slow Mo Guysabadrahman12 (25)in #science • 4 years ago Gav and Dan have fired some massive guns. This is not a video that contains a massive gun. In fact, this gun is smaller than a lot of bullets! Did you like this video? Like and earn 50% extra. This video is collected from YT. #fun #fact #slow #gun