when we mark a target we try to keep the firearm as still as possible however some of our muscles' movements will be passed to the barrel most of the time. a portable device that will separate the firearm from the human body yet still let the human eyes and hands to point it at the target can solve this problem.
. it can be called a 'gun float', it can be put on the ground or any none-moving surface right beside the marksman. if the concept is sound then it can be done. the videos shows the prototype in action. the marksman does not touch the firearm, trigger is pulled through keyboard or touch screen.