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1/16/2012 11:23:28 AM EDT
I noticed this inside my upper receiver.  The outside is fine, the inside has this 'wavy' look to the finish.  Is this common, or at least a good enough finish for the inside of my upper?  It has the square forge mark, if that means anything.





1/16/2012 11:39:21 AM EDT
[#1]
normal? I'de say no

enough protection? I'de say yes
1/16/2012 11:40:52 AM EDT
[#2]
Looks like some sort of spray on dry film lube.
1/16/2012 11:49:48 AM EDT
[#3]
Quoted:
Looks like some sort of spray on dry film lube.


I second the motion.
1/16/2012 11:51:25 AM EDT
[#4]
what is the white speckled substance? did you spray it with brake cleaner?
1/16/2012 11:54:27 AM EDT
[#5]



Quoted:


Looks like some sort of spray on dry film lube.


that is what is supposed to be in there



 
1/16/2012 11:58:17 AM EDT
[#6]
Quoted:
Quoted:
Looks like some sort of spray on dry film lube.


I second the motion.


I third that.  Looks like some sort of PTFE dry lube.  I bought a bottle of the stuff KG sells and had that shit all in my gun....works, but I hated looking at it.
1/16/2012 12:05:24 PM EDT
[#7]
Quoted:
what is the white speckled substance? did you spray it with brake cleaner?


It's from a tissue

It's what I had close, and used it to get some CLP off for the picture.
1/16/2012 12:07:46 PM EDT
[#8]
Quoted:

Quoted:
Looks like some sort of spray on dry film lube.

that is what is supposed to be in there
 


yup
1/16/2012 12:14:37 PM EDT
[#9]
It polishes the ar15 upper with the black denim, or it gets the hose again
1/16/2012 12:45:16 PM EDT
[#10]
Quoted:
It polishes the ar15 upper with the black denim, or it gets the hose again




1/16/2012 6:35:31 PM EDT
[#11]
I wondered this too when I saw mine flaking but it's normal will go away after a 1000 rounds or so I've found
1/16/2012 6:41:11 PM EDT
[#12]



Quoted:



Quoted:




Quoted:

Looks like some sort of spray on dry film lube.


that is what is supposed to be in there

 




yup


+1



 
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