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AR15.COM
4/11/2018 5:12:06 PM EDT
[Last Edit: EzGoingKev][Edited]
I was looking inside my barrel using a cheap borescope and can see rings in the rifling -

Attached File


There are a bunch of spots where rings just like that occur. What would cause them?
4/21/2018 10:46:06 AM EDT
[#1]
Picture posting fail sauce.

Sounds like carbon ringing but I'm betting what you actually are seeing is tool marks.
4/21/2018 11:32:38 AM EDT
[#2]
The image should be visible now.

This is the first time I have looked down one of my barrels. I have never seen rings like that.
4/21/2018 11:36:07 AM EDT
[#3]
Who is the barrel's manufacturer?
"If this is how The State treats its law-abiding citizens, then it deserves to have none." -Alexandr Solzhenitsyn
4/21/2018 11:42:18 AM EDT
[Last Edit: EzGoingKev][Edited] [#4]
Quote History
Originally Posted By spartacus2002:
Who is the barrel's manufacturer?
View Quote
It is the factory barrel on my RPR with almost 1400 rounds on it.
4/22/2018 12:15:11 PM EDT
[#5]
Reflections from the light on the borescope.
4/22/2018 12:42:42 PM EDT
[#6]
Quote History
Originally Posted By ballisticxlr:
Reflections from the light on the borescope.
View Quote
I was wondering if it was an artifact of the light on the scope
"If this is how The State treats its law-abiding citizens, then it deserves to have none." -Alexandr Solzhenitsyn