Do you need to change out the entire slide or is it just a barrel change to shoot other calibers? I own a SIG P229 40cal and can make it a 357 SIG with a barrel change, can't do that with the 9mm P229 so did they change that in the 320?

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James G. · Answer

Matthew, it is the same for the P320, you can convert a P320 .40 to .357 (or vice versa) with just a barrel swap. For 9mm you need the "Slide" change still same as your P229.

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Do you need to change out the entire slide or is it just a barrel change to shoot other calibers? I own a SIG P229 40cal and can make it a 357 SIG with a barrel change, can't do that with the 9mm P229 so did they change that in the 320?