Posted: 1/13/2008 1:06:09 AM EDT
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I'm thinking it's about time to replace it... What round count should it be at? G36 .45ACP |
Glock's un-official guide is you should replace it every 4k rds. But as Reaganstein pointed out if it is tossing the brass everywhere and/or fails the vertical g/rod spring test, replace it. As a note: I have 2 G17 from 1986 and both function fine, both have the non-captured g/rod spring assembly. Both fail the vertical test. 
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After you make SURE it is unloaded, point it toward the celing and pull the trigger. Holding the trigger to the rear, pull the slide back as far as you can and SLOWLEY let it forward. If it closes all the way it is ok, if not replace it....
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I'm really surprised that YOU didn't add the disclaimer, that the test is not actually a test, and it proves nothing of value. And that some Glocks even fail the test, brand new out of the box. |
HotRod is correct that is the way to test them. |
On what do you base your statement on? Just wondering, because a retired Master Glock Armorer disagrees.  |
 ouch
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He actually did, in his prior post. (At least I took it that way) Thanks for the assistance guys. None of them 'fail' the test... But I'll stick to live fire for function. |
I still think the Wolff Springs' "test" makes more sense.
I also disagree with the Wolff test. The reason being, I personally bought a well used G17L with a worn out spring. The brass would barely dribble out of the chamber and land by my right foot. I put a new spring in it, and the brass started flying out like any other of my Glocks. I put the worn out spring in another Glock, and it had the same effect. The brass would barely dribble out, so that tells me, the symptom wasn't specific to the G17L. You could tell the spring was worn out, by how easily you could rack the slide with it installed. And oh yeah, it failed the "test". But the guns still shot perfectly. They just didn't eject the brass as far. |
Just a little FYI, Frank wrote the first Glock Armorers manual and still teaches the vertical test in class  (with a disclaimer of course)
Correct Most of the factory armorers still use the test. It is no big deal for Glock Inc. to replace a few g/rod & springs if they fail. It gives people watching something to  over. |
Every-now-and-then, somebody'll post an exception to the laws of physics. I have no explanation for that! 
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If you would like, send me a PM with your mailing address. I will send you said recoil spring assembly on my dime. I still have it in a baggy of broken/worn parts that I was going to swap out at the next GSSF function. But they never come around here. And I bet you can't cite the physics principal that supports your claim. As a matter of fact, there are other recoil spring vendors, that contradict what Wolff says on their website. |