hi guys i was wrong about those heat seeking broad heads and would like to apologize it seems that i miss read the info i got the broad heads are going to be available this summer they are SOUND SEEKING BROAD HEADS and thats even better you just point and shoot AND IT does all the work i think this is a very good idea it will take xbow hunting to a whole new level the wonders of modern science what will they think of next sound seeking broad heads from muzzy broad head what a great idea huh !!!!!!!!!!!!!!!!!!