Oh, and to answer the usefulness of the radio mimic, its for more than one person, i.e. two people are talking, you could either A. Blow one of there heads off with a bolt action, then the other one pulls an alarm. Or B. use the mimic to lure them into the train your on, quietly dispatch them with your knife THEN blow the other guys head off with a bolt-action. Of course, an m-60 would probably solve that problem by spraying, no wait, make that a suprressed m-60.