 His first product was a ring-lever revolving rifle, available in .34, .36, .38, .40, and .44 caliber, in which a ring located forward of the trigger served to cock the hammer and advance the cylinder for each shot.This was soon followed with a revolving pistol.These five-shot "Paterson" revolvers featured folding triggers, and were available both with and without loading levers in .28, .31, and .36 caliber.