the guns buds has are all of recent manufacturer and should all have the new trigger update (99%) chance but there is always a slight chance that you cold get one needing the mod. Just rest assured that Sig will take care of you if this happens SIG SAUER, Inc.
72 Pease Boulevard
Newington, NH 03801
Phone: 603-610-3000
Fax: 603-610-3001

No issues Rocky. Buds has cycled through all the P320's needing the "Trigger Upgrades". Now having said that (Murphy's Law still exists) on the remote chance you get one without it, Sig will take care of you quickly. sigsauer.com/support/p320-voluntary-upgrade/ -----(youtube.com/watch?v=S2FqSa7ZGBM)