the trigger in the chamber hit kenso's heart. his father spent the next decade in court trying to punish the manufacturer for making an unsafe gun. he lost. gun rights groups say that what is needed it getter training, not more regulation. >> when you do things right with holsters and lock them you don't have the problems much there's still the children that have this happens. the nrma teaches kids to stop don't touch. >> some children are too young to understand. after christmas a to the ler accidentally killed his mother with a gun she kept in her purse. >> accessed a concealed weapon discharging it >>> and a 3-year-old shot his father and mother in a hotel room. >> that's what happens when you don't secure a firearm and you are unsafe. children have easy access to them. people got hurt. >> a child cannot use a cell phone if it's locked. but in this cases, nothing in the design presented children pulling the trigger. gun manufacturers have been addressing this issue usual. arm armatich tried to sell a smart gun. to try to preve