I think someone programmed the CNC mill incorrectly. They are totally useless. (IMO)

 

I would think the same program would be downloaded (once it’s proven) for each production run. The program would have to have been changed.
Looking at the two slides, they each have five relief cuts at the front of the slide and six at the rear. Even if someone just loaded the wrong tool the programed dimensions would have to have been changed to make that work out. The one on the left (top pic) the milled cuts are so narrow. There is no way the same cutting tool would have been used for both.
BTW, between the first (top) and second (middle) pics the pistols are flipped right to left. I was a bit thrown off at first studying them.
It would be interesting to see what Sig had to say, if they would actually comment.

 

My guess is that one was made at 4:59 on a Friday, and they skipped a machining step so they could be the first one out of the employee parking lot…

 

That’s odd. I’d get in touch with Sig.

 

I like different looks in the same model, my two P365 builds is why I did it.

 

Contact SIG, those serrations are grossly out of spec.

 

Perhaps the California compliant models are made in China or India. Sig is a global company according to one of its own customer service representatives. Sig does tout its parts as made to specifications irrespective to country of origin. The Sig name makes all its product equal despite the hallmark of inconsistent quality control.

 

Sig has ONE manufacturing facility for firearms...NH. Anybody who didn't realise that SIG wasn't a global company must have been hiding in a closit. they manufacture much more than firearms. You clearly have no clue as to what makes up the company.

 

Yeah, they look back asswards.....

 

You're the winner of the SIG's Unicorn Award. It's a machining special they just sent down the assembly line and then QC passed. For kicks - see if the customer notices it.

 

They saved $1 on CNC wear & tear and production cycle time, good for them

 

My p365xl has the same issue just on one side of the slide.

 

Here’s the difference in serrations-

 

Like a rare defective postal stamp, worth millions in 99 years.

 

Ian McCollum will be featuring this in a future episode for Forgotten Weapons

 

LOL, some of ya'll need to take a looooong sip of whatever your fav beverage is and cool off just a tad... it's not a biggie, I was curious more than anything. My fav comment was "...You're the winner of the SIG's Unicorn Award...", I'll take it as a win, hehe

Apparently I can barely go ANYWHERE packing heat (legally, that is) in my wonderful state of CA with some new banana bills in effect that just took effect this morning, so there are waaay more important issues to be upset about, just to put things in perspective!

Happy New Year!

 

clearly sig has a quality control issue with machining the serrations - we've seen 2 examples just in this thread. A likely by-product of ramped up production and running at full speed for a while now.

 

Sig is starting to cut corners left and right with production just to save a few bucks. Like how the new version of the P365XL slide no longer says “XL” just “X” so they can use the same slide / machining pattern on several sub-models.

One of the many reasons I am happily abandoning this brand of firearm.

 

One of the many reasons I am happily abandoning this brand of firearm.

Curious what brand of firearm you are going?

 

Quick update - got a hold of Sig customer service, chatted about the slide, sent pictures over to them... They confirmed this isn't "by design", so obviously a miss on their part at the various steps of the production/QC line. Offered to swap it out ASAP, I might take them up on it at some point down the line. Right now it's not really worth the hassle - "don't miss the forest for the tree" is how I'm looking at it, as I really enjoy shooting both of the new-to-CA SIGs and just happy to have my hands on modern firearms out here.

 

Just if it were myself I would jump on their offer "while the iron was hot".
Not a big deal I know but later on down the road it might be harder to accomplish.

 

Always thought the really aggressive racking grooves of the 365 were a useful feature. None of mine are problematic.
Moon

 

UPDATE: so as I mentioned earlier, I was going to hold off on sending the slide in for review/replacement, but Sig actually proactively called me back asking if I'd be willing to send it in as apparently it got quite a bit of attention internally. I suspect that the service rep I originally called cared enough to share with management and they wanted to trace how the heck this went through all the checks without anyone noticing or caring about such out of spec mill job. In short, I sent it in last Friday and got back the replacement this morning (7 day total turnaround from start to finish).

I must admit, this was a painless process with a very attentive service rep who was prompt, courteous, and all-in-all on-point - impressive first interaction with Sig CS. I had them throw in suppressor heigh sights on the new slide while I was at it, and they are a perfect match for the 407K as a backup should the optic fail (perfect co-witness as well). I need to do some homework to find a middle ground between stock irons and suppressor heigh ones for the EPS Carry as that one has a lower ceiling than 407K but still not quite low enough to clearly see stock irons. Any suggestions on slightly higher irons?

 

It’s a good thing you sent it in. I imagine those shallow serrations would cause the 365 to go off in a holster. I can’t help with the irons but I did throw on the Romeo x compact and the built in back ups made it so I didn’t have to touch the stock ones.

 

I am ha

It’s a good thing you sent it in. I imagine those shallow serrations would cause the 365 to go off in a holster.

I am having a hard time trying to figure out how shallow serrations on the slide could cause the 365 to go off in a holster? Please enlighten me.

Dave Y -

 

One does have to wonder how obvious screwups like this manage to get past all of their quality control checks. More than one person handled that slide from the time is was (mis)cut to when it was Nitrided, then assembled, then finally boxed and shipped out.

 

Like anything else in life, mistakes happen. We had a screw on lock out tag out for an outage at my plant a month ago. Multiple tags were in the wrong spot, hung by senior process specialists, and missed by confirmer (me being one of the confirmers who messed up), so that tag out was missed by multiple sets of eyes. Sometimes mistakes just happen. Thankfully no one was injured and the mistake was caught.

 

Just p320 humor. Ignore me.

 

CA politicians gonna make us have slide serration safteys here if they read your posy Boost. Lop

 

Nice that you got it fixed!

 

I would have kept it and put it on GB for $50k listing it as a one off prototype that was secreted from the factory by an employee gone rogue.

 

Wise move to get the correct slide serrations. The guns are so tight when new that I really needed all the serrations I could get until the gun was broken in.
As far as the issue, it could be the milling software, the milling table, worn or out of adjustment blades, etc. But it seems positive that Sig really wanted to get that slide back to find out how it got by their QC.