It's probably a coating on the spring to lubricate and protect the spring from rusting.
I don't know if S&W does this , but several other brands do.
Congratulations on buying a great gun.
You'll love it.
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Well I finally got around to it, I purchased an M&P 9.
Quick question.
The gun is brand new, I took the gun down to clean it, what is the blue substance on the recoil spring?
It's probably a coating on the spring to lubricate and protect the spring from rusting.
I don't know if S&W does this , but several other brands do.
Congratulations on buying a great gun.
You'll love it.
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S&W identifies different recoil springs for different models with different colors. It's paint. It's normal.
I believe the compact is yellow, the 45, something else.
Great choice, enjoy!
Jeff
Thanks for the replies... I was more curious as to what it was than worried about it.
Took the gun to the range yesterday and put 100 rounds through it, LOVE it so far!!! I definately need more range time though.
Don't we all
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Yup, I have an M&P 9c and the recoil spring coating is yellow.
My spring color is blue as well.
I've got the .40 full size frame and the paint on the spring is blue
9, 40 and 357 of a size all use the same spring. The 45 is different.
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