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Hi John Lee, it is not available with a threaded barrel, but you can buy one after market >>> https://true-precision.com/sig-p320-compact-x-carry-m18-3-9-threaded/ Stay safe & have a great day!

This model does not have a Threaded barrel so, as it stands, that's a no. Now you can purchase a Threaded barrel aftermarket to add if you choose.

Hi John and welcome. Not as configured without a threaded barrel. You would need this barrel to add a suppressor : https://www.sigsauer.com/barrel-p320-p250-9mm-compact-threaded.html ----------- Cheers, stay safe and enjoy!