M&P 2.0 compact spring issue

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New to forum. Just got an M&P 2.0 compact 9mm and upon cleaning prior to first firing, a small, 1/8” piece of the recoil spring broke off at the yellow painted end. Took it to the range and put 100 rds thru it. Upon cleaning it, another piece of the spring about the same size broke off again. Anybody else have this happen?
 
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Not on mine.
From the wording, I'm hearing you say you twice broke a piece off the spring during cleaning, not firing.

The obvious question is: How are you cleaning your gun in such a manner that you're breaking chunks off your recoil spring?
Denis
 
Seriously Ronco- how are you cleaning that thing?
I can't imagine any cleaning method that'd break the recoil spring twice.
Denis
 
Possibly it was broken when he received the gun and he just found it when he cleaned it the first time.

My new 9mm 2.0 compact recoil spring broke on round 44, but worked weakly until round 47 when it wouldn't return fully to battery. I disassemble the gun and found the recoil spring broken in the middle. Gun out of action.

I called Smith customer service and they had a new one to me in a week.

I cannot imagine that the broken spring was the OPs fault in any way. It likely came to him broken. Really, what could he have done to break a recoil spring just by cleaning?

I'm guessing this was a defective spring from the get-go. As was mine. Properly made recoil springs don't break when new.
 
If it was a defective spring assembly, it's possible it might not have been noticed when the newly assembled gun was test-fired. If it was somehow damaged during assembly of the recoil spring assembly (bolted onto the guide rod), it might've slipped through until the gun was field-stripped by the new owner for its first cleaning after he/she fired it.

S&W test-fires its M&P's more than some other companies test-fire their pistols. Unless it's changed, we've always been told (in armorer classes) that each M&P is test-fired with 15 rounds (using factory test mags, not the ones that eventually get packaged with the guns).

This is compared to another major maker who (if I remember from my notes correctly) fires 2 standard pressure rounds and a single proof load (described as being 130% of standard pressure).

A long time ago we were told that in the older 2nd & 3rd gen guns, S&W randomly pulled a gun after production and fired a magazine load through it, checking for functioning and general accuracy (a random spot check, as it were).
 
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I can see a recoil spring breaking, during firing.
I can't conceive of any method of cleaning one that would break a piece off even once, much less twice.

With the pistol functioning in between breakages, and the breakages only being noted during pre-fire & post-fire cleaning, I'd again ask how Ronco is cleaning that pistol.

Complete disassembly of the recoil spring assembly (not needed or advised), with breakage occurring during reassembly somehow?
Reassembly possibly being done wrong?

The wording was breakage "upon cleaning", not noticing a piece of the spring fall out on disassembly, twice.

If Ronco could come back on & explain in more detail, it would be extremely helpful.
Otherwise, these captive spring assemblies are extremely easy to R&R, there's nothing I can imagine that could possibly break a 1/8" piece off the compressed & contained spring during cleaning.

You remove the assembly, you squirt it out if you feel the need with something like Gunscrubber, or wipe it down with a rag wet with your favorite cleaner/luber, and you reassemble when you're done with the rest of the gun.

You don't have to force anything anywhere, assembly goes right back in with a tiny bit of compression to seat, and there's no impact or unusual stress or forced manipulation anywhere.
Denis
 
Pictures would be helpful, including the recoil spring assembly and the "pieces".

Agreed, hopefully the OP comes back and posts again in this thread, and pictures would be most helpful here.

At this point he has not revisited the site (at least not while logged in) since the original post from what I can see...
 
Without followup, I'm suspecting operator error.
I'd still very much like additional info.

Breaking (not finding it broken), a 1/8" piece off during cleaning BEFORE firing, and the same AFTER firing, does not sound like a factory installation goof, does not sound like the spring was broken BEFORE he got the pistol, does not sound like the spring is breaking during shooting, and occurring twice during cleaning with identical results, sounds like something odd going on as a part of whatever that cleaning process is.

Interesting. :)
Denis
 
I don't know what site you're referring to, can you either give a name to Giggle, or describe what he says he's doing?
Denis
 
It sounds like a bad heat treat on the spring made it brittle. CS should a replacement. I wouldn't shoot it until fixed.
 
But how does it break during cleaning?
There's zero stress on that assembly during cleaning and only a tiny bit of compression to R&R it in the slide.
Denis
 
But how does it break during cleaning?
There's zero stress on that assembly during cleaning and only a tiny bit of compression to R&R it in the slide.
Denis
I would guess, he's noticing the pieces when he goes to clean. I didn't read it as happening while he was cleaning.
 
Said upon cleaning it a piece broke off. Twice.
Not "When I opened it up a piece fell out."

It'd be helpful if he came back & explained. :)
Denis
 
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