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Field Stripping SIG with SRT in It

This is a discussion on Field Stripping SIG with SRT in It within the SIG Sauer Pistols forums, part of the SIG Sauer Forum category; It was pointed out to me the other day that the SIG manual includes special instructions for taking down a SIG that has the SRT ...


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Old 08-29-2016, 09:23 AM   #1
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Field Stripping SIG with SRT in It

It was pointed out to me the other day that the SIG manual includes special instructions for taking down a SIG that has the SRT trigger mod in it. You are supposed to decock the trigger slowly as you remove the slide from the frame.

This was certainly news to me. Guess I should read the manual?

But seriously, I've never done this and don't get why it is necessary, or if it is?

Does anyone do this? Or do you just field strip as usual?
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Old 08-29-2016, 09:29 AM   #2
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I do, per the manual, on my M11-a1 and P227.
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Old 08-29-2016, 09:32 AM   #3
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I guess I would want to know why you wouldn't just accept it and follow the manufacturers instructions? I have to do it for all of my SRT Sigs.
To answer your question, I don't know. I just do it cuz it's the right thing to do.
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Old 08-29-2016, 09:52 AM   #4
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I read that also when I got my 226 Elite. I have no idea why they say that because it makes absolutely no difference I can tell. So now I don't bother with it on any of my three Sigs with the SRT.
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Old 08-29-2016, 10:15 AM   #5
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The bar on the SRT that connects to the sear at one time would chatter wear, or get rough like a saw blade.
Sig has addressed that.
Mostly they are saying do not drop the hammer with the slide off, because of possible damage.
I use the decocker on all P series to disassemble, and it is easy to do.
Can't hurt to use the decocker, although dropping the hammer by mistake is not usually done.

It is such a habit with me now, it never comes to mind.

The issue of slingshotting or closing the slide with no round means it slams home harder.
I don't know if it would ever do damage, but I avoid it either way.
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Last edited by dwg13013; 08-29-2016 at 10:18 AM.
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Old 08-29-2016, 10:25 AM   #6
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Yeah, it's just a habit now. Take the slide forward and decock it. It's no hassle.
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Old 08-29-2016, 10:44 AM   #7
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The reason is that with the hammer cocked, as would be the case when removing the slide, the top of the safety lever is up enough to impact the slide as it moves forward past its normal forward extreme (in battery position). Decocking, at this point of slide forward travel, allows the safety lever to drop down further so as not to impact the slide and wear or stress the safety lever and associated components.

Care should also be exercised on assembly for the same reason, be sure you replace the slide starting with the hammer down (decocked).

To see what's going on, remove slide. Then with hammer decocked, push down on the top of the safety lever. Cock hammer and repeat - - note the safety lever protrudes up from frame. Remove barrel and recoil spring. Now, with hammer still cocked, put slide on frame and slowly move it to rear. The *conflict* between safety lever and slide will be obvious - don't force the slide on - it is possible to do so and this is why SIG came out with the "new" procedure. Lower hammer first and there's no conflict during assembly.

On many older guns there's enough slop in the system that one might disregard the above procedure - that's not a good idea. What will happen is that the safety lever will not push the firing pin block safety all the way clear of the firing pin. The gun may still function as expected, the firing pin shoving the mostly out of the way safety plunger the rest of the way clear. This can result in a couple of bad outcomes, either a peened and damaged safety plunger (over time), or the safety plunger impact can slow the firing pin to cause intermittent light primer strikes and FTF's, or the firing pin safety lever may not push the firing pin plunger up far enough and the gun will no longer function.

Or, just do what SIG suggests and avoid all this hassle
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Last edited by bumper; 08-29-2016 at 10:47 AM.
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Old 08-29-2016, 10:59 AM   #8
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The original SRT safety lever had a tendency to develop a rough edge from rubbing against the trigger bar, and that could result in the safety lever hanging up on the trigger bar causing a failure of the trigger to reset. The special instruction to decock the hammer when removing the slide was to release tension between the safety lever and TB and reduce the rubbing.

SIG has redesigned the safety lever, making it longer which prevents the development of that rough edge. I was told by SIG CS that the special instruction to decock the hammer applies only to the earlier SRT equipped pistols and is not required on latter models.

But I still decock them.
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Old 08-29-2016, 11:05 AM   #9
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Quote:
Originally Posted by ThnkFrst View Post
I was told by SIG CS that the special instruction to decock the hammer applies only to the earlier SRT equipped pistols and is not required on latter models.

But I still decock them.

Makes sense, I've only worked with pre-2010 or so guns. A P226 SSE from about 2010 was particularly tight after the SRT kit was installed.

And I decock them all too.
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Old 08-29-2016, 01:53 PM   #10
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Quote:
Originally Posted by ThnkFrst View Post
The original SRT safety lever had a tendency to develop a rough edge from rubbing against the trigger bar, and that could result in the safety lever hanging up on the trigger bar causing a failure of the trigger to reset. The special instruction to decock the hammer when removing the slide was to release tension between the safety lever and TB and reduce the rubbing.

SIG has redesigned the safety lever, making it longer which prevents the development of that rough edge. I was told by SIG CS that the special instruction to decock the hammer applies only to the earlier SRT equipped pistols and is not required on latter models.

But I still decock them.
new/old
Attached Images
File Type: jpg New Old SRT Safety Lever.jpg (177.1 KB, 14 views)
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Old 08-29-2016, 01:58 PM   #11
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I try to remember, but always forget
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Old 08-29-2016, 02:02 PM   #12
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I never remember to do it on the one SRT equipped pistol I have.
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Old 08-29-2016, 02:33 PM   #13
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I've never done it either, so I was just wondering what the point is.

As I gather from this conversation it appears it was a precautionary step for earlier models.

Maybe they just have not gotten around to changing the user manual.
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Old 08-29-2016, 02:43 PM   #14
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Quote:
Originally Posted by Flash LB View Post
I never remember to do it on the one SRT equipped pistol I have.
i bet you do & don't realize it.

after removing the slide, cleaning/lubing both frame & slide, installing slide.......how to you lower the hammer, thumb or de-cocker.
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