Malfunctions in SR40C Today

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kbm6893

Single-Sixer
Joined
Aug 3, 2008
Messages
288
Not my gun. Guy at range bought it brand new 2 weeks ago. It wouldn't go more than 3 rounds without locking open after ejecting brass. Pulling the slide to the rear would not free it. Only way to get it going again was to thumb the slide lock down. It was not his grip hitting the slide lock. He let me try it and I had it happen 5 times in 10 rounds. He's gonna send it in to get looked at but he's not happy.
 

Rei40c

Blackhawk
Joined
Feb 16, 2012
Messages
976
I hope he sent the magazines as well. While I'm assuming the problem persisted with multiple magazines and that he tested for that (I hope) before hand. I guess the obvious guess is a problem with the slide lock. However I've read crazy stories even hear about magazine followers being installed backwards, magazine springs backwards, followers for the wrong calibers that where mistakenly placed in the wrong magazine. For instance a 9mm follower in a .40 magazine...

The worst part is most of these stories I've read where not done by the owner but at the factory (Not Ruger but many big names that may surprise you) . :D This is very likely an easy fix with a $5 part but it's too bad the fellows not a member here so we could find out what happened. If you hear back from him let me know. As an owner I always like to keep my ear to the ground regarding this particular pistol and it's current events so to speak.
 

NixieTube

Blackhawk
Joined
Oct 14, 2009
Messages
988
Location
Massachusetts
There are a couple of YouTube videos about this, my guess is that your friend's problem is similar to Pyro's (watch both his videos, part 1 and part 2.)

The slide stop lever is a "balanced" part - meaning that there is spring pressure that forces it "down" all the time, and then, when the magazine follower contacts that little tab on an empty magazine, it overwhelms that spring pressure and forces the slide lock to move upward and....lock the slide back. You can see what happens if something is wrong by watching his videos. This is back in 2013: maybe your friend has one of those guns -- even though it's new that doesn't mean "just manufactured."

Part I:

https://www.youtube.com/watch?v=EzuKfLR5t4k

Part II:

https://www.youtube.com/watch?v=KA9Njeyeldo

He can check the serial number by production year here:

http://www.ruger.com/service/productHistory/PI-SR40c.html

The Slide Stop Spring is Part #32 on the diagram on page 44 of the manual, here:

https://ruger-docs.s3.amazonaws.com/_manuals/srSeries.pdf

It's just a little itty bitty thing. My guess is that his is either missing, broken or somehow not anchored properly inside the gun, and that's letting the slide stop "flap around" and lock the slide back when it's not supposed to.

That should be a simple and easy fix for Ruger. I'll bet dollars to donuts it's a bad spring on the slide lock assembly, they'll fix it fast and he'll be happy again.
 
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