Author Topic: Slide Pins  (Read 4515 times)

Offline Phsimone

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Slide Pins
« on: November 19, 2014, 06:41:53 PM »
I was wondering if anyone knows what causes the slide pins to fail. One of my R9s, my carry piece has bent two slide pins. Did not really notice until I disassembled for cleaning. Got them out alright but could not get them back in to reassemble, just a slight bend. Improperly hardened? No + ammo ever used. Thankfully I did receive a couple from Maria prior to the sale and have one more put away.

Offline tracker

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Re: Slide Pins
« Reply #1 on: November 19, 2014, 07:32:50 PM »
I don't know for certain but in the past during reassembly I noticed that the pin might not go all the way through to complete the slide to frame connection. I suspect that it is this partial insertion that puts a side load stress on the pin and may cause failure. My only advice is to ensure that the pin is all the way through to the other side and fully in place prior to racking the slide.
« Last Edit: November 19, 2014, 07:34:27 PM by tracker »

Offline backupr9

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Re: Slide Pins
« Reply #2 on: November 19, 2014, 10:35:49 PM »
I agree with Tracker...I really work to be sure the pin is fully inserted  using a small brass punch and have never had this problem.
"Those who would sacrifice a little freedom for a little order, will lose both, and deserve neither." 
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Offline Phsimone

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Re: Slide Pins
« Reply #3 on: November 20, 2014, 07:52:07 AM »
Thanks gentleman, that may have been the issue not sure. I am pretty careful on my reassembly but will be more aware of ensuring  the pin is installed so both ends are flush with the frame. Yup I can see how that may have been it, the slide grazing against a slightly protruding pin with all that force.

Offline tracker

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Re: Slide Pins
« Reply #4 on: November 20, 2014, 07:51:06 PM »
Also, it may be a combination of the transverse pin loading stress failure and a metallurgy issue with some pins. In past years I don't ever recall seeing forum documentation of pin failure. It seems to be a recent occurrence but we don't have any serial number tracking information like in the past.
« Last Edit: November 20, 2014, 08:48:18 PM by tracker »

Offline chameleon

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Re: Slide Pins
« Reply #5 on: November 28, 2014, 10:11:54 AM »
I'm not sure these pins should be hardened as that will make them non pliable and could fail by breakage, I would think the pins would be soft and have the ability to bend just a tad. You have to have a weak link in the process and the barrel lug can not be the weak link.

The real question is where can we get replacement pins now.

Offline bamboobob

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Re: Slide Pins
« Reply #6 on: December 02, 2014, 08:19:23 PM »
Quote from MRC

The pins are in stock and here is the contact info.  I ordered some parts already.

The contact info is
Williams Gun Sight inc
800-530-9028
PO Box 329 Davison MI 48423
The term pup is fine  -   I call mine Karl Jr.
I hope it ketches on!

Offline bamboobob

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Re: Slide Pins
« Reply #7 on: December 02, 2014, 08:23:31 PM »
The term pup is fine  -   I call mine Karl Jr.
I hope it ketches on!