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Let's Talk P320 Trigger Pull Weight

This is a discussion on Let's Talk P320 Trigger Pull Weight within the P250 & P320 Modular Pistols forums, part of the SIG Sauer Pistols category; Originally Posted by AGWoodard I don't think rubbing that in our faces is doing anyone any good, and is beneath you. But then, maybe not, ...


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P250 & P320 Modular Pistols P250, P320, and Exchange kits

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Old 11-27-2016, 02:23 PM   #31
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Originally Posted by AGWoodard View Post
I don't think rubbing that in our faces is doing anyone any good, and is beneath you. But then, maybe not, I don't know you, only what you wright.
What are you talking about? It was obviously a joke amongst friends. Alma was part of the Sig Team, and has access to prototype equipment, and he's being generous sharing what he knows about said accessories. He's also been extremely active on this site and on Facebook helping answer peoples questions, not to mention all of his tutorial youtube videos.


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Originally Posted by AGWoodard View Post
And on this thread, you state you don't know when the GGI kit will be available, but on the thread on Enos, you say "very soon". So maybe you are playing to individual audiences on the two sights, one because it is for competition shooters and this one because it is geared more towards self defense shooters.
Bit much of a conspiracy there. You know what's more likely? Alma knows the kits will be available soon, but, because he's not Bruce Gray himself, Alma doesn't know exactly when. Even in this thread, he mentions the kits aren't on Grayguns website "yet," indicating they're coming soon.

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Originally Posted by AGWoodard View Post
As for your comment on the trigger though, I'm a bit confused as to how a simple trigger is going to drop the pull weight by 2 pounds, and, if this is even possible, why Apex has not done it already. The only thing I could see is a complete polishing and plating of the parts that the trigger bar rides on, and the parts that rotate in the FCU housing. But I doubt that will reduce the pull by 2 pounds. And again, I'm pretty sure APEX would have jumped all over that on their flat faced trigger if it were even remotely possible.

I did go over to the Ballistic Radio facebook page, and did not see any triggers in the "photos" on the page. If you were referring to one that is installed in a gun, well, that's pretty much pointless. The exposed parts of a trigger don't tell us much, we would need to see the internals to evaluate what potential difference they would make. But again, I could be wrong.

Seek and you shall find. Here is a link to a thread that has the information you seek, and the reason for the 2lb drop, including pictures of the parts.

Gray Guns......
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Old 11-27-2016, 04:27 PM   #32
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I do like that trigger! I am on Grays waiting list to get mods on my P320. Think I am going to beg for one of these!

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Old 11-28-2016, 03:53 AM   #33
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Quote:
Seek and you shall find. Here is a link to a thread that has the information you seek, and the reason for the 2lb drop, including pictures of the parts.

Gray Guns......
Sigh....

A photo of the trigger installed in a gun does nothing to show how it alone will reduce the trigger pull weight by 2 pounds. THe description doesn't mention how the trigger in and of itself reduces pull weight except to say it acts like a Ghost Connector, which I would question. If you look at the actual trigger, it simply sits in the FCU, and uses a lug on an arm to move the trigger bar. So the only two things that can be done to the actual trigger, are to polish and maybe plate the pivoting points, and perhaps move the lug that the trigger bar rides on to reduce take up. Changing the SHAPE of the trigger itself, will have little if any effect on actual trigger pull, as is evidenced by the Apex Flat Faced Trigger.

In addition the thread you linked to is almost 5 months old.

But thank you for playing....
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Last edited by AGWoodard; 11-28-2016 at 03:58 AM.
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Old 11-28-2016, 07:00 AM   #34
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Originally Posted by AGWoodard View Post
Sigh....

A photo of the trigger installed in a gun does nothing to show how it alone will reduce the trigger pull weight by 2 pounds. THe description doesn't mention how the trigger in and of itself reduces pull weight except to say it acts like a Ghost Connector, which I would question. If you look at the actual trigger, it simply sits in the FCU, and uses a lug on an arm to move the trigger bar. So the only two things that can be done to the actual trigger, are to polish and maybe plate the pivoting points, and perhaps move the lug that the trigger bar rides on to reduce take up. Changing the SHAPE of the trigger itself, will have little if any effect on actual trigger pull, as is evidenced by the Apex Flat Faced Trigger.

In addition the thread you linked to is almost 5 months old.

But thank you for playing....

Thanks for playing? I'm trying to help you out. If you had substituted your petulance for an additional 10 seconds of scrolling, you would have come across a picture with both trigger types, the trigger "lug arm," and all the extra springs and parts.

Further, I'm not a gunsmith, but I keep seeing reference that the Graygun's P320 kit has subtle geometry changes. It was even mentioned that other triggers (Apex, and I assume stock) wouldn't work with parts from the kit due to such changes. Thus, and anybody can correct me if I'm mistaken, but I'd guess that the kit's trigger and "lug arm" alone create slight changes to the geometry. Even the smallest changes can easily account for large increases or decreases in trigger pull weight.
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Old 11-30-2016, 05:00 PM   #35
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Sadly enough, I don't have a trigger gauge, but did find the trigger of the P320 a bit too heavy out of the box.
I have been spoiled by a 3.5lb Ghost connector on my Glock 19.
I had done a trigger job on my G19 with mix results, but as the after market options are limited for the P320, I decided to implement a trigger job.
To my surprise, it was definitely effective. As a point of reference, a right or left hand shooting was always a challenge to me, as my front site was always moving when pulling the trigger. After the trigger job was done, the front site stayed on target every time.
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Old 11-30-2016, 05:01 PM   #36
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Originally Posted by Practical Shooter View Post
Sadly enough, I don't have a trigger gauge, but did find the trigger of the P320 a bit too heavy out of the box.

I have been spoiled by a 3.5lb Ghost connector on my Glock 19.

I had done a trigger job on my G19 with mix results, but as the after market options are limited for the P320, I decided to implement a trigger job.

To my surprise, it was definitely effective. As a point of reference, a right or left hand shooting was always a challenge to me, as my front site was always moving when pulling the trigger. After the trigger job was done this, the front site stayed on target every time.


Can you provide some additional details as to what you did to the trigger?
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Old 11-30-2016, 05:18 PM   #37
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I polished the trigger bar, where it meets the FCU, as well as the FCU faces that meets the trigger bar.
I did not want to venture into pulling the rear mechanism (don't know the name of it), so I polished the parts that come in contact with the safety and firering pin. Same thing on the slide for the safety and firering pin.
I had to be very careful not to let any of my (home made) polishing compound fall inside the gun mechanism. So every so often, I brushed the compound off with an old tooth brush.
I would have rinsed it off if any compound had fell inside the firering mechanism, but was confident that nothing when inside that area.
Now, you guys are going to flame me for that, but it did work very well. My compound was some Comets mixed with water, applied very carefully with Q-tips
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Old 12-01-2016, 05:51 PM   #38
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Sorry, guys. I was not trying to rub it in and certainly didn't mean to offend. I just wanted to share that it's actually going to happen soon even though the delays have been mind numbing. I was fortunate to be able to test early versions and give feedback to Bruce. This has been a long process to be sure.
Bruce just posted another picture on his Facebook page of the new style flat trigger (a one piece whereas mine is two) that was just back from machining. He said that the kits should be announced soon through th Grayguns newsletter but didn't provide specific dates.
In the regards to my statement about the trigger itself reducing the pull weight, the stud on the trigger that connects to the triggerbar has been relocated. That changes the geometry and reduces the pull weight. The trigger itself will work with no other changes to the gun. The rest of the kit includes a new sear, reduced power sear springs, and a couple of other minor components like the safety cam that is discussed.
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Old 12-02-2016, 10:42 AM   #39
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Originally Posted by Alma View Post
Sorry, guys. I was not trying to rub it in and certainly didn't mean to offend. I just wanted to share that it's actually going to happen soon even though the delays have been mind numbing. I was fortunate to be able to test early versions and give feedback to Bruce. This has been a long process to be sure.
Bruce just posted another picture on his Facebook page of the new style flat trigger (a one piece whereas mine is two) that was just back from machining. He said that the kits should be announced soon through th Grayguns newsletter but didn't provide specific dates.
In the regards to my statement about the trigger itself reducing the pull weight, the stud on the trigger that connects to the triggerbar has been relocated. That changes the geometry and reduces the pull weight. The trigger itself will work with no other changes to the gun. The rest of the kit includes a new sear, reduced power sear springs, and a couple of other minor components like the safety cam that is discussed.
Great news/info Alma!

In your opinion, will this trigger by USPSA legal for CO? The way I read the rules, I think the gun can have trigger work, but the trigger itself must remain substantially similar to the factory option.
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Old 12-02-2016, 03:00 PM   #40
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The flat trigger is not but the other style is a factory profile trigger that isn't legal. Bruce showed it to DNROI at Production Nationals this summer and he gave it the thumbs up.
Hopefully SIG will eventually come out with the flat trigger on the X 320 that would give me a Production legal flat trigger option for those seeking one.
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Old 12-17-2016, 07:41 AM   #41
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So what all did you do? Also, I notice that when you use your lyman guage, you start with the gauge resting on the trigger. (not saying it's wrong) but when I use the gauge in that manner it reduces the pull by 1 -2 lbs vs starting off the trigger. ie my 320 off the trigger is consistently 6-6.5lbs, when starting on the trigger as you did it's in the 4.5 - 5lbs range and makes a big difference.

To be honest not sure if one way is "proper" vs the other but it does make a significant difference. I tend to use off the trigger as it seems that lines up with what the factory specs are so I assume that is likely the right way.

Anyway seems like you did some nice work on the trigger. Welcome to the forum and nice first post.
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Old 12-17-2016, 11:43 AM   #42
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Might call The Sig Armorer (Robert Burke) and ask him what he can do?
That's exactly what I did. My P320C had a pull weight of 8.2 lbs, which was too heavy for my liking and inconsistent with the ~5-pound pull of my other pistols. I sent it off to Robert and it came back dialed in at 5.2 lbs PLUS a much-improved slack and re-set configuration. Good job.
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Old 12-18-2016, 03:44 PM   #43
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My p320 subcompact trigger pull weight new was 6# 8oz. I have only ran a few hundred rounds through it so I expect that it hasn't changed. I requested Grayguns to do a trigger job on my p320rx and I'm still waiting for a response. I prefer a drop in kit and do the trigger work myself as I have done all the trigger work on all my other guns.

The P320 trigger is good from the factory but I run my XDm's at 3# - 3.5# single stage and that's what I'm use to and train with. If my 320's are going to remain in my line up the triggers are going to have to improve.
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Old 12-24-2016, 03:12 PM   #44
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I started shooting competitively earlier this year with the P320 Compact. I have two - an FDE model that almost bone stock (except the X-Ray front sight post I put on it) and a black one (purchased in June of this year) that I've RMR'd and had stippled by Bowie Tactical. The FDE model I've shot at the SIG Academy and just a bit in competition (once in a while I shoot Practical in 3GN) - it's had a couple thousand rounds through it so far, if that. But the black one has had at least 5000 rounds through it, and at least 10x that number in trigger pulls from dry fire practice.

Conventional wisdom says that the trigger pull on my black P320 Compact should be lightening with this much wear - that's been my hope for months given how heavy the P320 trigger is (coming over from a 4 lbs. Apex Tactical trigger on my previous M&P). I bought a Lyman Digital Trigger Guage to measure the pull weight on both pistols. The FDE model has a trigger weight (average of 5 pulls) at just about 7 lbs. even. The black one is 7.8 lbs. I suppose it could have been a bit heavier and worn down to a 7.8 lb. pull, but it seems largely unchanged to me.

I keep hoping and praying that Gray Guns will get their P320 trigger replacement done and out the door...but until then I guess I'll swap out the FCU's on my two pistols.

Has anyone else meaured the pull weight on their triggers? Have they seen any significant improvement over time?
If you get a Flat Face Trigger it will promote a straight pull back and also allow more leverage to make a heavier trigger lighter. This pistol I will say is not the best platform. The Walther PPQ with Apex Flat Face Trigger is probably the best for competition shooting. However, the PPQ has a really high bore axis and because the frame is so light, you really do feel recoil. The P329 slide is so heavy, you don't feel as much
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Old 01-10-2017, 12:12 AM   #45
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Looks like the Grayguns flat and curved trigger finally landed on its site complete with installation video. Again, this part alone acts a bit like a Glock 3.5lb connector and can take almost two pounds off of the pull. He also has a custom sear and sear springs but I didn't see it those yet. Hey, it's progress. https://grayguns.com/product/custom-...-trigger-pelt/
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