I carry a 640-1 j frame S&W Centennial . This model is a double action only. No exposed hammer. It rides good in a holster either IWB or OWB and in your pocket. It handles +P+ .38's or .357. I also carry a .32 acp and fill it will work a hole lot better than my 1911 .45 left in the gun safe because it was to big. The .44sp bulldog is a great gun.