The Slide on my Sig Mosquito failed catastrophically today..

[Lunchbox]

just called Sig, first thing the girl asked was if I ever changed the recoil spring. I didn't think the gun had been used enough for it to wear out, and it had been working fine up until yesterday.
she implied it should be common knowledge to a "gun owner" that recoil spring replacement was routine maintenance. I asked her if it said that in the owner's manual but she didn't know... I'll be checking that when I get home.

How often do you guys replace your recoil springs?? This makes me want to replace the one in my SP2009.

Let's pretend for I second I don't know what I'm talking about(cause in this case I don't): would changing the recoil spring have helped this from happening?

[V Man]

Try contacting the person below and see if she can help you.

Diana Chapman
Customer Service Manager
Sig Sauer

6037722302Ext8136

(603) 418-8163


diana.chapman@sigsauer.com

[mc762x54R]

I'm not a SIG fan, but my Berrettas have also had failure issues, after 50,000 rounds on same slide, on a pre-production test model.

VERY GOOD PICTURES - they show the cause of failure clearly - SIG should not have an issue with this failure.

The failure occured exactly where and how I would have expected it to, which leads me to believe it is a design issue, not a quality control issue. As OldmanFCSA said, that corner is a large stress concentration.

To the OP, was this thousands of rounds in the 3-5 thousand range? Or in the 30-40 thousand range? I could maybe understand if it is 40k rounds. That is probably a pretty high number for the type of material and process that frame is made from. If it failed that way after 3k rounds, then it was a huge design failure.

Either way, I would say that if they send you a replacement slide with no design changes, it will probably fail in about the same amount of time. It could be marginally better/worse depending on casting quality of that particular slide.

I'd say the round count is in the 5000 to 8000 round range. I agree, it will probably fail again, based on the poor design and poor materials..

[mc762x54R]

just called Sig, first thing the girl asked was if I ever changed the recoil spring. I didn't think the gun had been used enough for it to wear out, and it had been working fine up until yesterday.
she implied it should be common knowledge to a "gun owner" that recoil spring replacement was routine maintenance. I asked her if it said that in the owner's manual but she didn't know... I'll be checking that when I get home.

How often do you guys replace your recoil springs?? This makes me want to replace the one in my SP2009.

Let's pretend for I second I don't know what I'm talking about(cause in this case I don't): would changing the recoil spring have helped this from happening?

Well when the gun recoils, the slide stops when the spring is fully compressed and the front-lower part of the slide hits the frame. The Sig girl is implying a newer spring would lessen the impact of the slide and frame. I'd be surprised if there was any measurable degradation in the spring after a few thousand cycles or 22lr.

[gyrfalcon]

I'd be surprised if there was any measurable degradation in the spring after a few thousand cycles or 22lr.

It would be fairly inexpensive/interesting to order a new spring and compare if you haven't sent the entire thing off yet...

[mc762x54R]

They fixed it!
they sent me a tracking email but otherwise they never contacted me.
I guess this will be the routine every few thousand rounds or so...I don't even know if they replaced the recoil spring or not.

It won't get as much use now anyway, I picked up a Ruger mk iii on Monday