Good observation. I assume the drag is still there (but not that it matters)? It shows that there was not sufficient testing before release and are now re-engineering as parts fail. Sig should honor any requests from current owners to update their gun.

That said, I'm at around 500 trouble free rounds.

Sent from my SM-N910V using Tapatalk

 

I just picked it up today (around 19:00 ET). I'll provide an update on that once I shoot it, but I'm pretty sure it's going to have similar drag.

 

Thanks for the info!
I just (now) checked mine and can confirm my 5/11 build does NOT have the newer chamfered type striker.
I wonder when (build date) they made this change?

 

How do you know what build date you have?

 

Great info, thanks!

 

That is a much larger radius on the transition and should completely solve the issue as far as the striker breaking. It brings up some parts compatibility issues, but if Sig is the only place that gets to work on the pistols at that level, I suppose they can deal with compatibility issues that way.

 

BTW, I just noticed that with the new trigger bar spring the trigger pull weight increased from 5lb to 5.5lb.

 

...
2. The inner side of the striker pin hole in the slide had been chamfered accordingly (note the shiny ring on the last darker picture):
...

Did you get a new slide or did they modify your existing slide?

 

They modified my existing slide.

 

Thanks for the update. I'm sticking with my LSPI stainless steel striker with my OEM replacement striker as a backup. Don't think I'm going to need it however.

 

You guys are very smart. Thanks for catching this obvious reshape of the firing pin. I sent mine in for a unrelated issue but the returned gun on the worksheet showed "striker sleeve replaced as a courtesy". Returned to me within the last 10 days.

Sorry the original pic is not the same angle as I only saved it to record the numbers but it is clear the firing pin shape has been altered. I cannot tell if the actual shape of the channel has been reshaped as it is very clean due to the fact I have run cotton swabs through it.
original,

replaced without me asking,

 

There is going to be a bunch of $100 Dollar after market strikers setting on the unsold shelf now with a clearance sign.

 

Not really. They fit into the guns already in service and I would think they would be the perfect solution to those with no problems but wish to be protected against a pin breakage in the field.

 

tgun603, thank you for sharing your story and pictures!

Striker Pin Redesign Thoughts:

1. Would love to see someone take a set of calipers and determine if the new firing pin protrudes farther from its base than the previous one.
2. Would also like to see depth of the inner striker channel measured and see if it is shallower than the older (Jan-March models). (If so, this might explain why we are seeing the relatively expensive slides replaced when p365s are sent in for a simple TRS repair)
3. The base of the inner striker channel appears to show some peening?
4. tgun603's latest generation striker makes the dry fire dull thud sound rather than the metallic clink.
5. The front striker cups must be coming into contact with the inner channel wall before the front of the striker contacts the end of the inner channel on the backside of the breech.
6. The striker stamping numbers shared by pm9 in post# 10 of this thread appear to be the same on the redesigned striker pin profile as they are on the older un-redesigned striker pin profile (See kansascity45 Post# 49 here. Two different striker pin profiles sharing the same stamping numbers. That's curious?
7. I've updated the dry fire thud post over here.

 

Is there any way to get Sig to update my April 13th p365 to this new striker configuration? Or must I wait for my defensive carry gun to fail first? 😕

 

2. The inner side of the striker pin hole in the slide had been chamfered accordingly (note the shiny ring on the last darker picture):

Great photos by the way! I'm impressed you got light down in there to show all this. One thing not mentioned is the pounding it looks like the striker side of the breech is taking. In the "before" photos, it looks like there are indentations from the striker, or contamination in the striker channel. They seem to be more on one side, which may be the bottom of the channel.

That may be another reason to use snap caps. I don't think the striker would leave those marks on its own. Could the tip of the striker been in there and it was dry fired for awhile?

Just an observation.

 

Yes, the marks on the inner side of the slide's striker pin "wall" are most likely from the broken firing pin stuck in the channel and me dry-firing the pistol few times before I realized what happened. It also seem to have some minor carbon build up (I have not tried to clear it yet).

 

Superb thread!

These reported changes give me hope, particularly the change in trigger bar/weight.

My 365 arrived at SIG today so I hope it receives these updates as well.

 

This brings up the question as to the striker spring being modified as well, or are they using the same spring? If the primer marks look the same, then I would say it's the same spring. Given all the remarks about the primer mark issue it's a strong possibility they changed the spring tension as well.

 

They've shortened the striker spring. Check out cremaley's thread Rolling Changes to the p365 pjs62's post# 27:

 

I think there is more at play than just adding a radius.

The photos look like the radius was added by shortening the full diameter part of the striker. If so, then removimg a bit of metal to allow for the radius was not needed.

My guess is that the original small radius was impacting the firing pin hole (especially during dry fire) and causing a stress riser at the worst possible spot, and also causimg some peening to the opening. The peening would have a tendency to close the opening with a burr that could possibly grip the striker. When the slide closes with a bind between striker and opening, the tip would break off at the stress riser. MIM is strong in compression, not so much in tension.

The bit of metal that was removed from the slide may have been done to remove the peening/burr, and would not be needed when the new design is fit into an older slide if peening is not present.

It looks like a small hand reamer could be used by a technician to bevel or rework the backside of the firing pin opening in less than a minute.

The fact that several strikers have failed with dry fire only discounts primer swipe as a cause of failure.

 

...
The fact that several strikers have failed with dry fire only discounts primer swipe as a cause of failure.

Exactly. Both times my striker' pin broke off was result of dry firing.

 

Well, on first glance I thought we were looking at a brand new mim-ed striker, but after staring at the comparison pic a while I am more inclined to believe Sig is simply turning the old striker to remove some material. Perhaps so that it doesn't ram the end of the striker channel.

Supporting evidence are that pm9's striker tip and tgun603's appear to have leftover turn machine marks not present on the older strikers, and that the stamping numbers are the same even though the profile has changed.

 

June 6, 2018 on sticker.

 

Someone correct me if I am wrong but your picture looks like the more rounded striker in all the (gen 2) guns. Maybe TARS with his photo editing skills can shed some light on this by comparing all three.

If it is the "original" shaped striker, does that mean this new slightly different shaped striker is not really an "upgrade" but Sig is just making a a modification to guns made during a specific period as they randomly come in for repair or service?
The next test should be, a new style striker in a all stock early model slide.

 

Yes, looks similar to my May 10 striker and shorter striker spring.

 

If this is a new design striker and if there are other design changes to parts (trigger spring, slide etc), I would like to know if Sig is going to let us early adopters of the 365 get our guns "upgraded" or not?

 

The last I read from another forum member that talked with Sig CS... there is no voluntary upgrade program for the P365. Couldn't hurt to give them a call and ask again.

 

Looking at the pics, if they are removing metal from where the striker protrudes through the channel hole, and then chamfering the inner channel to match.... wouldn't that make the firing pin protrude even MORE into the primer (as if they aren't already deep enough??)?

 

The striker in these pistols are horrendous...cheap cheap cheap MIM

 

Thank you for the very information filled post.

Otherwise we would have thought they were made from the same material as virtually every other striker fired pistol. You know, like the MIM strikers in Glock's, Hk's, Smith's, etc.

 

The improved striker tip looks a bit longer ?

 

This is what I questioned in an earlier post (but it's ignored). The 365 already has extremely deep firing pin penetration, I'd hate to see it even more (mine seems to be deep enough to border on punching through the primer).

 

On the new vs old striker shape, I am leaning towards it being a newly formed part, not an old one that has been altered.

Reason is, I don't believe MIM machines that well .....IIRC, that tends to mess up the part a good bit, as you'd break through the surface structure.

Also, if this is a redesign, as it looks to be, long term plan you would redesign the mold, so go ahead and do so now.

That is, if the two shown/pictured are not just "one off" repairs by a gunsmith,

 

Does anyone know if the depth of the striker channel (where the shoulder of the striker hits) in the old slide is different from the depth of the striker channel in the new replaced slides? The shoulder of the new redesigned striker is shorter than the shoulder of the original striker.

 

I measured my 3/11 build and found a depth of 1.745" from the end of the slide to the shoulder in the striker channel. Will someone with a new, replaced slide (that uses the new upgraded striker) measure the depth of their striker channel from the end of the slide to the inside shoulder of the striker channel?

I would like to know if the old design striker will fit the new, upgraded slide that has the upgraded striker.

 

Anyone else see similar changes in a newer pistol or another one sent in for work? Or was this a one off fix?