M&P 15 Magpul Mid wear question

[Rottmayer]

I got myself a new M&P 15 Magpul MID for Christmas: I am new to the AR platform. I did my initial cleaning with some CLP under the supervision of a jarhead buddy of mine.
Long story short, I have had one range day with it using 60 rounds of PMC 55 grain .556 ammunition.

When I went to clean it the following weekend I noticed some wear inside the chamber. Is this normal wear or cause for concern?ImageUploadedByTapatalk1456486594.770400.jpg

[A-2]

I would say no cause for concern and you'll see more "shiny" places as break in continues. They will show you where to lube.

[cyphertext]

Agree... if you shoot the rifle, you will see wear, especially where you have moving parts rubbing together. Put a little oil on it and call it good.

[Rottmayer]

Great to know guys, thanks for the quick response, still in the learning phase of this platform