But there were issues. The rifle was as complex as the average lunar rocket-"and it was equally dangerous at both ends. With the turret loaded, one chamber was pointed at the shooter, and if the primer flash went into that chamber, he got to see what the next world was like. Nevertheless, Porter went into production and built 1,250 rifles in three variations, mostly in Manhattan. This is the Second Model, of which 350 to 400 were made. It has a screw-off cover for its magazine and a serpentine loading lever at the muzzle. It looks to be in NRA Fair condition (basically, a 3 on a scale of 10) and, assuming the action is operable, is worth $4,500 to $5,000. Not a bad thing to turn up in a closet.