>> roger stringer: i did. i did. of a gun goin' off without a trigger bein' pulled. it made no sense. >> stahl: what roger didn't know was that by then remington had gotten some 200 complaints claiming just that, about rifles like zac's, with a trigger mechanism called the x-mark pro. six months after justin was killed, another tragedy with the same trigger, this time in chadbourn, north carolina. 16-year-old jasmine thar and her cousin jahmesha were about to go christmas shopping. >> robert chaffin: they were standing out in the front yard, with the grandmother sitting on the porch. >> stahl: robert chaffin, an attorney for jasmine's family, made this animation: a neighbor across the street in his bedroom picked up a loaded model 700. the safety was off. >> chaffin: and it fired through a closed window. and in what could be the most random act you ever heard of, the bullet traveled across the street and went through jahmesha's chest, barely missing her heart, and basically hit jasmine almost directly in the heart, a