What is this flaking off inside my M&P 15?

**schwaggy** · 08-20-12, 14:29

During cleaning, I noticed this stuff flaking off the inside of my receiver. Low round count on this rifle (700rds) as I use it seldom for coyote. But, I certainly didn't notice this stuff flaking the last time I cleaned it. I am using TM solution on the bore and finished off with some SLIP EWL.

Anybody know what this crap is?

Thanks!

**ASH556** · 08-20-12, 14:33

That's a high friction/high heat area where the BCG rides. Looks like whatever green stuff you coated the receiver with is wearing off.

**schwaggy** · 08-20-12, 14:40

Originally Posted by ASH556

That's a high friction/high heat area where the BCG rides. Looks like whatever green stuff you coated the receiver with is wearing off.

That green is factory anodized, I didn't do anything to it. This is the Cabelas special edition of S&W's Performance Center M&P 15 which also comes in black and RealTree. Look closely and you'll see the receiver is green under whatever this grey gunk is...

I'm curious if I should find something to dissolve it completely and just get it all out of there. I also wonder if it was the TM Solution bore cleaner...

**Moltke** · 08-20-12, 14:45

Contact the manufacturer...

**markm** · 08-20-12, 14:47

Isn't it just that dry lube film that's in the receiver?

**VIP3R 237** · 08-20-12, 14:55

Originally Posted by markm

Isn't it just that dry lube film that's in the receiver?

That is what it looks like to me.

**The_Count** · 08-20-12, 15:00

Originally Posted by markm

Isn't it just that dry lube film that's in the receiver?

Yea, It was anodized then the dry lube film was applied (spray in). I wouldn't worry about it. Just lube as usual. Dry lubes wear out eventually. You're noticing it more because of the green anodizing.

TC

**Reagans Rascals** · 08-20-12, 15:04

exactly which area is the flaking?... the green or the greyish area?

as in... is the grey area flaking away and showing the green, or the inverse?

it seems like its the anodizing coming off the inside of the receiver...

ETA: that's the dry lube film coming off and showing the anodic coating... you're fine... just add lube