The following is SIG SAUER's current parts replacement schedule (numbers of rounds), with some comments of my own:

Barrel: If the pistol exhibits keyholing or unacceptable accuracy.
Decocking lever spring: 10,000
Extractor: 20,000
Extractor spring: 20,000
Firing pin: 20,000
Firing pin spring: 20,000
Magazine spring: When magazine fails to lock the slide open. *
Recoil spring: 5,000 †
Roll pins for breechblock retention (pins, HD): 5000‡
Safety lock spring: 20,000
Slide catch lever spring: 10,000
Takedown lever: 20,000
Trigger bar spring: 10,000

Mainspring (hammer spring): SIG SAUER evidently makes no formal recommendation about the mainspring, but as noted below, lbj was told by customer service that guns with 40,000 rounds are still igniting their ammunition with the original spring. If ignition problems do develop and can't be determined to be due to other reasons, a new mainspring would be a good idea.

* I also recommend replacing the magazine spring when ammunition is not held securely. This can occur before slide lock failures.

† I had seen an early recommendation here that the recoil spring be replaced after 3000 rounds, and that's what I follow.

‡ See discussion of the breechblock pins on page 4 of this thread.

Added for the armorers: Something else I found out in the course yesterday is that SIG considers the extractor used in P220 stainless steel slides to be a "sacrificial" part, and that it should be replaced after it's removed from the slide.

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

Good stuff, is this based on the latest armorers course you attended??

quote:

Originally posted by stoic-one:
Good stuff, is this based on the latest armorers course you attended??

Yes; graduated yesterday.

quote:

Originally posted by sigfreund:

quote:

Originally posted by stoic-one:
Good stuff, is this based on the latest armorers course you attended??

Yes; graduated yesterday.

The information is greatly appreciated and I've updated my data. Congrats on the course.

Thank you very much for posting this good information. Bill.

You're welcome, everyone.

I was prepared to try to pry some of this information out of the instructor/SIG rep because other than the recoil spring, I've never seen any "official" recommendations in my previous two certification courses or any other dealings with SIG. Imagine my pleasant surprise when I was flipping through the new armorer's manual and there it was.

quote:

Originally posted by sigfreund:
You're welcome, everyone.

I was prepared to try to pry some of this information out of the instructor/SIG rep because other than the recoil spring, I've never seen any "official" recommendations in my previous two certification courses or any other dealings with SIG. Imagine my pleasant surprise when I was flipping through the new armorer's manual and there it was.

Well dang I was hoping not to have an excuse to spend another $400 on an armorers course for two more years. I might have to go if they hold one near the ATL in the next year.

Did they come out with a final DAK manual section? Early last year we still were getting photocopied handouts. BTW I still dislike DAK sears.

One final question, I know this should be in a new thread, but on the Main Spring. Is the orginal (non-red) DAK spring available for a P229 from SIG? Or OEM available elsewhere? (TGS prefered)

quote:

Originally posted by detroit192:
Is the orginal (non-red) DAK spring available for a P229 from SIG? Or OEM available elsewhere? (TGS prefered)

To the best of my knowledge and belief, the mainsprings originally used in DAK models were simply the same spring as used in the DA/SA version. When I first ordered a couple of spares for my DAK P229, I was sent springs with the same part number as the DA/SA spring.

Thanks, sigfreund; good info.

If I'd been that instructor and I knew sigfreund was going to be in attendance, I'd have done some extra study myself before class!

Nice. Thanks for the info... can we get this stickyed?

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Originally posted by iSig:
Nice. Thanks for the info... can we get this stickyed?

+1 This amswers many questions that are frequently asked about replacing parts.

quote:

* I also recommend replacing the magazine spring when ammunition is not held securely. This can occur before slide lock failures.

Actually, this can be a problem long before it's time.

I put new springs in my P229 mags in Sept 07. Two of those mags now are becoming quite noisy as that rounds rattle around. Haven't taken them down to try to sort it out yet but am not too pleased with the rattle - especially with reasonably fresh springs.

I have a couple new springs left. I'll swap them out later and see how it goes.

Noisy loaded mags are not a good thing.

Steve, I've noticed some noisy double stack mags that were brand new. I've also read about other cases of it here on the forum. As I recall, no one has really been able to explain it.

I know. I recall some that never - that they posted - got them quieted down, but in my case, when I replaced the springs, they were quiet. They've stayed quiet until very recently. That's what I'm having trouble understanding.

Also, if I load them down to say, 10 + 1 [357Sig] they remain quiet. Add one round, noisy.

Odd. I'll probably swap a spring out tomorrow and will let you know how it goes.

Yeah, it's a puzzler. Especially why mags of the same size/design will sound different. I'd love to see a transparent version of the noisy culprit and just which round is making the racket.

As a further observation about rattlin' mags, I do know it's not always due to weak springs. I've experienced it with absolutely new specimens and had the problem disappear after some use.

In fact, my take on the problem is that new magazine tubes often have a lot of internal friction and that prevents the rounds from snugging down into their proper positions, thereby leaving one or two loose to move around. It seems to me I've had more rattling problems with phosphated mags and have had some luck by polishing their interiors to reduce the friction between cartridge and tube.

Well, let me add to the - what-the - part of the equation....

I just unloaded a mag that had Speer RHT rattling around in it, not that I cared, RHT is range stuff, and loaded it with Ranger XST, popped it in the P229 and it's dead silent.

As I loaded it, I shook it at each round to see if I could detect anything. At rounds 7 and 8, it rattled, round 9 it was quieter, then the rest were quiet. The last round made a little noise but a tap on the back seated it and all we quiet. This was one of the bright finished mags.

I'm going to monkey about with he other two later to see if I can quiet them as well. BTW, I don't care of they make a little noise, but these are so loose that they rattle when I walk - that's too noisy for my taste.

Interesting exercise.

Thanks for the valuable information.

quote:

Originally posted by sigfreund:
The following is SIG SAUER's current parts replacement schedule (numbers of rounds), with some comments of my own:

Barrel: If the pistol exhibits keyholing or unacceptable accuracy.
Decocking lever spring: 10,000
Extractor: 20,000
Extractor spring: 20,000
Firing pin: 20,000
Firing pin spring: 20,000
Magazine spring: When magazine fails to lock the slide open. *
Recoil spring: 5,000 †
Safety lock spring: 20,000
Slide catch lever spring: 10,000
Takedown lever: 20,000
Trigger bar spring: 10,000

Mainspring (hammer spring): 5000 or when misfires due to light hammer strikes occur and other causes have been eliminated. Note that this is my own recommendation; SIG SAUER makes no recommendation about the mainspring.

* I also recommend replacing the magazine spring when ammunition is not held securely. This can occur before slide lock failures.

† I had seen an early recommendation here that the recoil spring be replaced after 3000 rounds, and that's what I follow.

Added for the armorers: Something else I found out in the course yesterday is that SIG considers the extractor used in P220 stainless steel slides to be a "sacrificial" part, and that it should be replaced after it's removed from the slide.

Basically what I observe here is that other than the super easy replacement of the recoil spring during normal field stripping for cleaning, you can leave your slide assembly alone for up to 20,000 rounds if nothing goes wrong.

The lower receiver though is a different matter.

quote:

Originally posted by sigfreund:
SIG SAUER makes no recommendation about the mainspring.

Why is that?