I have a P320 full in .40S&W. If I wanted to convert to 9mm (also full), do I need to buy a full conversion kit? With a new slide, recoil spring, barrel and grip module?
Or, like Glock, will a 9mm barrel and magazines be enough to turn my .40 into a 9?
Or, like Glock, will a 9mm barrel and magazines be enough to turn my .40 into a 9?


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