My M&P rusted on me.

Please post some pictures. I had this problem last summer with my G17. That was a shocker. I never expected a Glock to rust.

I ask for pics because I was just PROMISED, sworn to by the firearms dealer that the M&P can not rust...impossibility! I had stopped to see the G26, and they just would not shut up about the M&P. I finally walked out.

Doc2005

Odd...have you contacted S&W?

Could you post pics?

I thought these things are melonited, supposedly hard and pretty much rustproof.
I guess melonite is not as good as tenifer.

I've read on some melonite vs tennifer thread that the two are made with similar but not identical chemicals, cuz tennifer can't be made in the US due to its chemicals, but melonite IS produced in the US.

The small parts are rusting, not the barrel and slide. Those are the stainless steel, treated, and coated parts. I'd think you'd have to neglect it pretty bad to get the barrel and slide on an M&P to rust.

Even Glock small parts rust.

My guess is S&W only Melonite treats the bare slide and the barrel only. Parts like the take-down lever, slide stop, guide rod, etc. are not treated. I could be wrong though. Is the actual slide and/or barrel itself showing any signs of rust (I sure hope not)? If you find out from S&W that the other gun parts besides the slide and the barrel are not Melonite treated as well, I would talk with Robar in AZ and see what they would charge you to NP3 the parts (that would do the job on stopping the rust on those parts).

Just read your last update. Wow, the actual slide is showing some rust. Yep, get S&W on the phone as soon as you can and explain what is happening, maybe you got a M&P that slipped through the cracks and missed out on getting the Melonite treatment process somehow. Strange.

zahc,

Did you use CLP?

mdao,

What's the story with that Glock? FWIW Glock doesn't use any stainless parts, they treat the steel slide and barrel with Tenifer.

Thats the torture test glock and it sat encrusted in rock salt and water for a week to get like that.

The slide stop/release is not finished in Melonite.
The Melonite process can supposedly cause brittleness in thin parts.

http://www.theprepared.com/index.php?option=com_content&task=view&id=90&Item

The Glock picture is from a torture test where it sat in salt water for a while. I posted it just to illustrate that any untreated steel part can rust.

Now if the slide is rusting and it's not just dust from the recoil rod... Wow. I'd call S&W.

The rust made that pretty little Glock almost as ugly as Ramblin' Rosie!

Re: the Tenifer finish on Glocks, Tenifer is not the black finish. The black finish is a coating, a whole different matter. According to Glock, Tenifer is a metal treatment of the steel that goes very deep into it, and is extremely hard. In fact, Tenifer is almost as-hard-as hard-chrome. But, Tenifer if not the black finish that can rub off.

mdao: That link is awesome. Even my wife, who is just so-so about firearms thought that was great!

Doc2005

I thought these things are melonited, supposedly hard and pretty much rustproof.
I guess melonite is not as good as tenifer.

Click to expand...

I've read on some melonite vs tennifer thread that the two are made with similar but not identical chemicals, cuz tennifer can't be made in the US due to its chemicals, but melonite IS produced in the US.

Click to expand...

Melonite is Tenifer under a different trade name, same process. It's rare, but some peoples sweat has the right chemistry to rust even a Glock.

You might try using CorrosionX on it from now on. It ended rust problems on my guns and knives and they don't have nearly as corrosion resistant of finish as melonite or tennifer. Even stainless can rust, so it's wise to use rust protection, even on things that are highly rust resistant.

Pics or it didn't happen.

I finally had the opportunity to get some pics of my G17 that rusted. I too would like to see pics of that S&W. The salesmen claimed that the S&W pistols are very nearly rust-proof. Anyhow, here is the G17 that rusted. It looks pretty mild now after having been cleaned up. Last year, when it first happened, it was pretty ugly!

View attachment 303268

Doc2005

i don't know how you guys do it but my guns have nevr rusted, i don't know it is wierdi guess. like the problem that many compain about with the older model xd's i never had a problem with rust on it or any other gun.

possum, some of us have acid hands

None of my other Glocks are rusted. I suspect that it is just something wrong with this one's finish.

Any gun can rust, they are made out of metal. But this is a little much for a new model with a "tough" finish. It looks like the finish is not properly applied to the metal. Not a good sign. Hopefully it is just one batch and not a serious flaw in the MP line.

Zahc,

Have you made a call to Smith about it? I'd be curious as to their response.

Thanks for posting the pictures.