>>11264225https://www.youtube.com/watch?v=L6dhDAoCRcAThey said the rubber parts are made of a hard rubber, but still has grip to it. The launcher hooks are also rubber, which is supposed to let it grip the launcher prongs for a stronger/faster launch.
They only did two rounds against stock Wizard Rod, but it KO'd both times and burst it one of them. They recommended putting it on a taller ratchet because most of the rubber is on the underside of the blade.