I thought of changing my back-up 38 SC to 9mm. Chester is a local gunsmith in South Carolina. He worked one of my 40 STI open and changed it to 9mm now my primary gun and runs great. New slide, barrel and comp etc. A couple of months ago, I bought a used STI Competitor 38SC and he will do the same job, change the caliber to 9mm. New barrel, comp, slide lightening and chrome it.