I guess the bottom line is that its NOT an issue???

It's not an issue unless you have failure of trigger reset in live fire.

If you do, send the pistol back to SIG and they will modify the trigger bar, or install a new one.

My 320c got back from SIG they said all they replaced was striker spring. And entire gun tested to spec included box top from 50round of Speer Lawman 124gr ammo for test firing. I've noticed no double clicks, shot 100 rounds with perfect function. I'll put at least 300-400 more through before I have my confidence back in this pistol. It seems tighter in the trigger action IMHO.

The trigger double click is said to be normal. This refers to an audible double click we hear when dry firing many P320’s. Is it really normal; well, allow me to share my experiences and observations. Among my many pistols I have seven P320’s, four Full, two Sub-Compacts and one Carry. The first three purchased (2015) had audible double clicks with distinctive trigger travel between clicks and the last four (4) purchased (after November 2016) had no audible double click. All Fire Control Assemblies are interchangeable (after updating the Slide Catch Levers on the two oldest). One of the Sub-Compacts with the audible Double Click had repeated Fail to Fire episodes.

We all now understand that all P320s click twice in dry and live fire. The first click is the Striker Release and the second is the Sear Reset. Trigger pull and Trigger Bar travel causes both clicks, BUT the timing and distance between “clicks” is critical. Most appropriately these clicks happen so closely that there is only a single audible click. In those P320’s with audible Double Clicks an audible second click in Live Fire is rare and hardly noticeable. BUT, using a P320 where it does occur, there is a very short timing opportunity for a Reset Failure; thereby, setting up the next trigger pull for Fail to Fire. This Reset Failure is stipulated on the trigger being released immediately after firing and before the Sear Reset. Engineering logic would dictate that the shock of firing would be sufficient to move the Trigger Bar across the Sear (Reset); however, in some P320’s the tolerances are just too broad. When I examined the Fire Control Assemblies on the most recently purchased P320’s I saw evidence of glossy polished surfaces on the Trigger Bar and mating surfaces at the Sear Assembly. These were brand new P320’s from Sig Sauer.

Conclusion, an audible Double Click, is a sign that timing tolerances need adjustment. Many things affect timing tolerances and this is best checked out at Sig Sauer; however, I broke down and carefully hand polished the Trigger Bars and mating surfaces on the three P320’s with the audible Double Click including the Fail to Fire P320. Surface materials were not removed just highly polished to match the glossy appearance observed on the new P320’s.

The result was surprising. The Double Click is gone on all and the Fail to Reset, Fail to Fire also gone.

Respectfully submitted,

This message has been edited. Last edited by: JackCo,

quote:

Originally posted by JackCo:
The trigger double click is said to be normal. This refers to an audible double click we hear when dry firing many P320’s. Is it really normal; well, allow me to share my experiences and observations. Among my many pistols I have seven P320’s, four Full, two Sub-Compacts and one Carry. The first three purchased (2015) had audible double clicks with distinctive trigger travel between clicks and the last four (4) purchased (after November 2016) had no audible double click. All Fire Control Assemblies are interchangeable (after updating the Slide Catch Levers on the two oldest). One of the Sub-Compacts with the audible Double Click had repeated Fail to Fire episodes.

We all now understand that all P320s click twice in dry and live fire. The first click is the Striker Release and the second is the Sear Reset. Trigger pull and Trigger Bar travel causes both clicks, BUT the timing and distance between “clicks” is critical. Most appropriately these clicks happen so closely that there is only a single audible click. In those P320’s with audible Double Clicks an audible second click in Live Fire is rare and hardly noticeable. BUT, using a P320 where it does occur, there is a very short timing opportunity for a Reset Failure; thereby, setting up the next trigger pull for Fail to Fire. This Reset Failure is stipulated on the trigger being released immediately after firing and before the Sear Reset. Engineering logic would dictate that the shock of firing would be sufficient to move the Trigger Bar across the Sear (Reset); however, in some P320’s the tolerances are just too broad. When I examined the Fire Control Assemblies on the most recently purchased P320’s I saw evidence of glossy polished surfaces on the Trigger Bar and mating surfaces at the Sear Assembly. These were brand new P320’s from Sig Sauer.

Conclusion, an audible Double Click, is a sign that timing tolerances need adjustment. I broke down and carefully hand polished the Trigger Bars and mating surfaces on the three P320’s with the audible Double Click including the Fail to Fire P320. Surface materials were not removed just highly polished to match the glossy appearance observed on the new P320’s.
Now all my P320’s have no audible double click and fire perfectly.

Respectfully submitted,

Nice detailed write-up/explanation.

tp

I installed the PELT trigger in my P320 F9. The double click is much more noticeable, now.

I like the rest of the trigger action so I'm prepared to ignore it.

Bruce