rcmark, I would ask around about the gunsmiths available in Arizona, as many can change a barrel, but how well they do it is another matter. Always check into their reputation and quality of their work. I have seen some who did bad jobs but charged exorbitant prices, and ones who did good work, that charged less, so depending on word of mouth is generally the best. I'd ask around a local range, or ask shooters from within the sate, as listed above. That means a lot.