 So, for instance, John Thomas Rourke does not carry a .357 Magnum as his backup gun, he carries a Colt Python .357 Magnum revolver customized by Mag-na-port and Metalife, firing Federal Premium jacketed hollowpoint ammunition.Such detail regarding the brands and specific products endorsed by Rourke extends to all sorts of items that appear in the series.This list is representative, but by no means complete.