these things domenated forum topics for awhile. ITs an Italian auto revolver also chambered in .454 casull as well. ppl who owen them tend to like them . they will shoot .38's out of the .357 and 45 lc out of the .454 but for the auto cyle action to work you have to change the slide spring out, which comes with the gun. evidently the gun will fire in typical da revo mode if you dont. The first shot is da or sa if you pull the hammer and subsequent shots are automatically cocked. They come in different barrel lengths but are rather difficult to find and pricey.