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West German P228 light primer strikes every so often.

This is a discussion on West German P228 light primer strikes every so often. within the SIG Sauer Gunsmithing forums, part of the SIG Sauer Forum category; I have a old p228 and been getting some light primer strikes. I guess I will need a new main spring but i hear its ...


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Old 12-24-2016, 02:02 PM   #1
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West German P228 light primer strikes every so often.

I have a old p228 and been getting some light primer strikes. I guess I will need a new main spring but i hear its better to go to the new setup. New plastic main spring seat and shorter main spring and new short strut. Is that better than the old setup?
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Old 12-24-2016, 02:14 PM   #2
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Probably.

Have you installed a Short Reset kit in the gun? If so, it could be an issue with the safety lever not raising the firing pin block high enough. I've posted on this issue previously here.

Otherwise, to check the firing pin, field strip and remove barrel from slide. Push on the firing pin end while pushing upward on the firing pin block until the FP unlocks and moves forward, continue holding FPB up and move the firing pin in and out to make sure it does so smoothly and freely, only resistance the firing pin return spring.

You can clean out the FP channel with spray brake cleaner and compressed air. If theirs any indication of broken bits it'll need to come apart.
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Old 12-24-2016, 04:04 PM   #3
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I have not done anything to the gun besides Hogue wrap around rubber grips for it. Besides that it is bone stock as it came from the factory.
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Old 12-24-2016, 06:06 PM   #4
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Normlizer, first off, welcome to the Forum. While it is possible, as bumper advised, that you may need to check your firing pin travel. When is the last time you stripped your slide? Have you had this since it was new? If so how many rounds has been through it since you have had it?
As far as the newer mainspring assembly, in most cases I have dealt with, the pull seems smoother. Although, it could cause a fit problem for your current grips. I guess it depends on their "vintage". I believe the current models of their rubber grips will fit either type, but if yours were produced prior to Sig introducing the newer style M/S assemblies there "may" be a problem.
In some cases, Sig appears to maybe using the E2 style mainspring seat, spring, and strut, as most places have ran out of the "longer nylon seats" but have the shorter ones, in stock, as are used with the E2 Grips.
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Old 12-24-2016, 06:21 PM   #5
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I have never stripped the slide I got the gun used from my brother he might have put a few hundred rds through the gun. He got the gun brand new. I myself have put a few thousand rounds in the gun. The gun was made in 1991 with KB on the slide. Just check the firing pin travel and seems to be just fine.

Last edited by Normlizer; 12-24-2016 at 06:35 PM.
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Old 12-24-2016, 06:29 PM   #6
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The newer style mainspring assembly is generally considered to deliver a slightly improved pull.

But first things first. Some primers are harder than others. Are you getting light strikes with more than one brand of ammo?
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Old 12-24-2016, 07:14 PM   #7
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These are all reloads. They all shot fine before. I just started to happen the last few times at the range i would get them happend about 5 x now in the last 300rds. All shot fine the 2x time i tried them.
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Old 12-24-2016, 07:22 PM   #8
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Originally Posted by Normlizer View Post
These are all reloads. They all shot fine before. I just started to happen the last few times at the range i would get them happend about 5 x now in the last 300rds. All shot fine the 2x time i tried them.
See what happens with some decent factory-new ammo.
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Old 12-24-2016, 07:34 PM   #9
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I rather buy the parts i need than waste money on a box of factory ammo. I never had a problem with my reloads untill now and its just in this one gun. I am not new to reloading.

Anybody know for certain if the new mainspring assembly will work in the older p228? Or should i just try and find a exact replacement?

Last edited by Normlizer; 12-24-2016 at 07:43 PM.
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Old 12-24-2016, 08:03 PM   #10
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I had a German 226 with the roll pins broken in the breach block(excessive dry firing) and it was light on 1 in 10 shots, such a relief to get onto a fault best of luck with yours.
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Old 12-24-2016, 09:40 PM   #11
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The new mainspring assembly will work but you will probably need new grips (or modify the old ones).
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Old 12-25-2016, 01:18 AM   #12
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Quote:
Originally Posted by bblr View Post
The new mainspring assembly will work but you will probably need new grips (or modify the old ones).

Upgrade to Hogue G10's when you do the new mainspring assembly....an upgrade worth the price. KB 228 is a great Sig.....a little tweak/TLC and you will be good to go.
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Old 12-25-2016, 05:24 AM   #13
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Quote:
Originally Posted by Normlizer View Post
I rather buy the parts i need than waste money on a box of factory ammo. I never had a problem with my reloads untill now and its just in this one gun. I am not new to reloading.

Anybody know for certain if the new mainspring assembly will work in the older p228? Or should i just try and find a exact replacement?
If you want to upgrade to the new style mainspring that's fine (it will function), but I don't think it's certain yet that you "need" one.

Mainsprings wear out so infrequently that SIG doesn't even publish a recommended replacement schedule for them. Their expected lifespan is many tens of thousands of rounds. You would probably need to replace your recoil spring 5 times before you might need to replace your mainspring. Again, if you want to replace it for the upgrade that is different, and I understand that. I've even done it myself on a P6 (the grips required modification).

I'm not saying that it's impossible that your mainspring needs replacement. But until you've proven that your problem is not a bad batch of primers, primers remain your most likely cause.

If you still get light strikes with good factory ammo, the second most likely cause would be a fouled firing pin channel.
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Old 12-25-2016, 06:50 AM   #14
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Being that old and with much use give it a tune up. I rebuilt my 1995 P228 in 2015, replaced all the springs with a detail strip. I've changed the sights twice and it will be due again within a year or two, I'll try the X-Ray sights then. I have the tools and with a few helpful tips I changed the mainspring, but that will be more of a challenge if it's a first time attempt.

Tools, parts, knowledge (gifted is good too) and when you're done you'll feel good about yourself and your 228. Or send it to Sig for an overhaul and have it done by those who have the skill and parts. Remember to check the The Mother of all DIY Videos and Tips Thread
Attached Images
File Type: jpg 20150406_184043.jpg (1.48 MB, 19 views)
File Type: jpg 20150406_201757.jpg (1.37 MB, 18 views)
File Type: jpg P228 Main Spring.jpg (1.33 MB, 18 views)

Last edited by Sarge1998; 12-25-2016 at 06:54 AM.
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Old 12-25-2016, 04:05 PM   #15
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Thanks for all the help guys i'll give it a good cleaning and hit the range see if it acts up. Not sure what i wanna do with it yet. We will see would like to do the short trigger and short reset trigger also but not sure if that will even work with the older model sigs. Merry Christmas though.
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