Manufactured continually from 1950 to the present, the Model 870 is the workhorse of American firearms, with over 11 million produced so far, in variants for use in hunting, sport shooting, home defense, police and military. Gene's trusty 870 is just a common Express Magnum, well-used for general bird hunting and home security duty, until a gang of outlaw bikers rolls into the ghost town of Amboy.