There are folks like that all over. @Southpaw is one, I'm another. Quite a few of the participants of the ADSS, that I link to yearly, are the same. Although. I will say, the guy in the video has some serious skills.At the Dallas Pistol Club and North TX Shooting Assoc matches there has been a shooter with just one arm to hold his pistol or rifle. He adapted and overcame his challenge.