Subscribe | UPI Odd Newsletter Subscribe HIGH RIDGE, Mo., May 29 (UPI) -- The Missouri inventor of "the world's strongest athletic cup" put his own genitals on the line and took a bullet to the groin to prove its effectiveness. Jeremiah Raber, 38, whose Nutshellz groin protectors were originally designed for UFC fighters, had business partner Matt Heck shoot a .22-caliber rifle at his groin while he was wearing one of the cups for a video promoting his Kickstarter campaign to launch a line of Nutshellz for kids. Advertisement "Don't try this at home," Raber warns in the video. "Our cup is not only strong enough to stop bullets but it also has a unique design and contour that allows it to rest comfortably in position without restricting an athlete's mobility no matter what the movement or sport," Raber wrote on the Kickstarter page. Raber said his products have also caught the attention of the U.S. military.