is it possable to make a one hit sniper? if so what gun and parts? also in this one match there was this guy who had an ultimate assult rifle. he just shot once (you could hear it) and i would die and light on fire. i understand the firepart ...

 is it possable to make a one hit sniper? if so what gun and parts? also in this one match there was this guy who had an ultimate assult rifle. he just shot once (you could hear it) and i would die and light on fire. i understand the firepart ...