Hi Quentin, Yes this is the newest model with the upgrades already done.

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If you are talking about the Sig P320 the guns Buds has are all of recent Manufacture so the odds are very high that the have the upgraded trigger that being said the only way to know with 100% certainty is the check the S/N. Buds will not give out the S/N but be confident that if you do get one that needs the upgrade Sig will take care of you

No pistol specified Quentin but if you are talking about the Sig P320 - this is a recent manufacture pistol and should have the upgrade. I would contact Buds Customer Service staff via LiveChat (available from 9AM to 9PM 7 days a week), the "blue chat now" button at the bottom right of the page, or phoning at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday). On the low possibility it is not upgraded, Sig will take care of you. sigsauer.com/support/p320-voluntary-upgrade/