I have a Colt 1991 NRM Stainless Government Model in .38 Super. I still want to be able to shoot Supers, but I would like to know what my options are for making this a dual caliber gun that will shoot 9mm also. I was thinking that all I would need is to have a 9mm barrel and different magazines. Is this correct? Would I have to have a different bushing for the 9mm barrel? What source for a 9mm barrel? I would love an actual Colt barrel. Is that a possibility, or would I be better off with an aftermarket one? Any suggestions on who to have fit the barrel? What are the best 9mm 1911 magazines? Thanks.