I handled a P320 for the first time the other day. The medium compact grip felt nice. What felt strange to me was the trigger. After the break, there was a distinct, but lighter second click in the overtravel. Do they all do that? What is happening in the mechanism at that point?

No, they don't all have it. Neither of my P320s do it, nor have any of the half dozen or so other P320s I've fondled.

I don't recall specifically what causes it, but according to Bruce Gray, it's a non-issue.

Also, it's reportedly only noticeable during dry firing, not during live firing.

My 320-RX had the double click. I installed the Gray Guns PELT trigger and it got rid of the double click and was a huge improvement on an already decent trigger. I don't mind long take up in a trigger as long as the wall is solid and the break is crisp. The PELT has a nice crisp break with a trigger pull reduced by about 2.5-3 pounds. Well worth the $100 IMO.

Mine did it when new, barely notice it after about 150 rounds. Shoots flawless by the way.

Probably a casting sprue.

This is interesting. Two of mine had it, I don't own them any longer. One CS rep said "it's fine if your not having problems." Another rep at NRA last year acknowledged the problem and said they are happy to fix, it should be returned. One worked ok the other would not ignite some rounds.

I don't think there should be that kind of inconsistency in gun in general. "Some have it, some don't." Really.

The second click during dry fire is a characteristic of the P320 trigger reseting. While unnoticeable on my early 9mm Full, I could demonstrate it to others on command with my early 9mm Compact by simply repositioning my finger on the trigger. At the time, SIG (and others) assured my the second click was normal and did not require a return trip to Exeter. While admittedly unnoticeable during live fire, judging from the number of references to this phenomenon on the inter-webs, others must have found it as annoying as me. I have since traded both of my early P320's away in favor of a factory fresh 9mm Compact. So far it has not displayed the second click. The redesigned Adverse trigger, refined controls and a recoil spring guide which is flush with the front of the slide are all indication to me SIG is committed to continual improvement of the P320. I have not personally examined enough newer P320's to determine if the second click has been addressed at the factory. I may have simply purchased a pistol where the second click is less pronounced, though I somehow suspect SIG is listening to the consumer and working to minimize the 'problem' on its newer guns.

quote:

Originally posted by sox:
I don't think there should be that kind of inconsistency in gun in general. "Some have it, some don't." Really.

I agree. The full size had a very nice trigger. The compact was really goofy. Obviously, the FCU is supposed to be the same, so it's a matter of individual variation/ QC not design differences.

hjs157: Both were "new" grip modules, so neither was an early model.

My 320C does it, noticeable with dry fire though I swear every once and a while with live fire I think I feel it. The truth is more likely that the gun going "bang" conceals the second click. The most annoying aspect to this 'non-issue' is that the double-click only happens sometimes (50-60% of the time); it may not be a 'big deal' to SIG but to me it certainly doesn't go to inspiring faith or confidence in the build quality of the weapon. And yes, not all 320s exhibit this trait though it seems like most of the Compacts that we get in do have the double-click to some degree.

First click is the striker release. Second click is the sear reset. On the P320, sear reset occurs during trigger over-travel.

In many P320 pistols the two occur close enough together to sound like a single click. Both of my P320s exhibit the double click phenomenon during dry fire and I can induce a failure of sear reset (in dry fire) by carefully arresting the trigger pull after the first click. I have tried to duplicate this and induce a failure to fire due to failure of sear reset in live fire, and have not been able to do so with either pistol.

Although there are many P320 pistols that do this, a small handful of P320 owners have had failures to fire due to failure of sear reset and had to send their pistols back to SIG. They seem to come back having undergone "modification of the trigger bar".

My new 320C is off to Sig dealer tried blaming on Ammo, Me, trigger control, if it's not right when it comes back i'm done. I've had Glock, Ruger, M&P,Beretta, even a 320 Fullsize never had this. I really couldn't have a bang ,bang, click carry gun and trust it. On sig talk they have changed milling on slides with pics supposedly changed some springs doesn't give one a warm fuzzy. link to another owner with same problem.
https://www.youtube.com/watch?v=8XypFJLfq-4

I have seen that video several times. I think it is important to note that the FCU in that particular pistol had been modified by a gunsmith. Read the comments.

Bruce discusses it a bit in the video for the PELT trigger:
https://grayguns.com/product/c...s-p320-trigger-pelt/

Brand new 320c-rx does the same thing during dry fire. Doesn't really bother me.

What does bother me is a mild "click" during the take-up part of the trigger pull. Feels like some sort of interference. Very noticeable. Handled a range rental with 10,000 rounds which did it, but not nearly as bad. Have not tried another new one yet. Any ideas?

quote:

Originally posted by pblanc:
I have seen that video several times. I think it is important to note that the FCU in that particular pistol had been modified by a gunsmith. Read the comments.

Yeah that video is pretty much worthless.



Screwed up the gun, blame SIG, SIG fixes good to go.

quote:

Originally posted by pblanc:
First click is the striker release. Second click is the sear reset. On the P320, sear reset occurs during trigger over-travel.

In many P320 pistols the two occur close enough together to sound like a single click. Both of my P320s exhibit the double click phenomenon during dry fire and I can induce a failure of sear reset (in dry fire) by carefully arresting the trigger pull after the first click. I have tried to duplicate this and induce a failure to fire due to failure of sear reset in live fire, and have not been able to do so with either pistol.

Although there are many P320 pistols that do this, a small handful of P320 owners have had failures to fire due to failure of sear reset and had to send their pistols back to SIG. They seem to come back having undergone "modification of the trigger bar".

If you work the trigger with the FCU removed from the grip module, you can see how as the trigger bar moves forward the first pulls on the sear lever, pulling the sear down and then as it travels further it starts to move downward drops low enough to allow the sear lever to slip off of the top, resetting the sear.

All P320s have two clicks, the first when the sear releases the striker and the second when the trigger bar releases the sear. The amount of double click perceived by the shooter has to do with how much trigger travel occurs between those two events, or more accurately, how quickly that travel happens.

I actually notice double click more with the Gray Guns trigger, since it take less pressure to release the striker and the trigger must travel a longer distance in order to reset the sear.

When shooting, if the sear has not reset by the time the slide returns forward, then the striker will not be cocked and the gun will not fire the next time you pull the trigger.

Theoretically, if you shaved some height off of the part of the trigger bar that engages the sear, it should disconnect earlier, thereby reducing the perception of double click. However, if you were to reduce it too much, then I think it might be possible that the sear lever would release from the trigger bar before the sear had released the striker, causing an even bigger problem.

https://www.youtube.com/watch?v=P0_SmAOkCyU

Another Everyone tries to blame the Gun owner I had mine 2 days 3 trips to range with cleanings after each. Having owned a Fullsize 320P before with zero issues. No gunsmith or backyard gunny worked on mine will report back when it's returned from Sig.

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

RichN and pblanc, I agree with your posts.
I have two P320c. I didn't have the double click until after I replaced the triggers with the Gray Guns PELT trigger. Now I have the double click with one of the pistols. I understand why it does that and agree with your posts. The slower that I press the trigger, the more easily I get the double click.

quote:

Originally posted by Arty:
RichN and pblanc, I agree with your posts.
I have two P320c. I didn't have the double click until after I replaced the triggers with the Gray Guns PELT trigger. Now I have the double click with one of the pistols. I understand why it does that and agree with your posts. The slower that I press the trigger, the more easily I get the double click.

Same here with my P320C 9 mm (Jan 2015). Had no double click over about 2,500 rounds. With the PELT trigger and the Sig TBS (trigger bar spring), it now has the double click. I'm not concerned in the least. No issues after about 600 rounds.

Some observations:

1) It only occurs under the following circumstance: Pulling the trigger SLOWLY while locating trigger finger at the very bottom of the trigger. Finger has to be placed on the trigger tip itself. Pulling it using normal speed at this location does not result in the double click. This is all 100% repeatable.

2) When trigger finger is placed at the NORMAL location on the trigger face, or anywhere you would normally place it when shooting, there is NO double click. It is 100% repeatable. In other words, the double click occurs ONLY when the trigger is manipulated in an abnormal fashion (Item 1).

3) My double click has no affect on reliability or accuracy...or anything else when shooting.

4) When the PELT is used with the GrayGuns TBS, the double click occurs 100% of the time, regardless of finger position or speed. This doesn't concern me, since I chose to use the Sig TBS anyway. Didn't need a trigger pull weight any lighter than the 5lb 12oz with the Sig TBS. For a defensive gun (mine), the improved quality of the PELT trigger makes the difference, not the weight.

I've noticed on my P320 FS .45 ACP, but only when pulling the trigger verrry slowwwly to feel it. When I'm even just dry-firing, much less shooting, I never notice it.