Discoloration on bolt/chamber/and barrel lugs normal?

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[ARCHIVED THREAD] - Discoloration on bolt/chamber/and barrel lugs normal?

Posted: 4/18/2014 6:11:02 AM EDT

I just shot the first 30 rounds through my brand new build. The bolt now has a goldish color to it as well as a few scratch marks consistent to the barrel lugs and chamber. I was wondering if this is normal and if not what might be causing it? Here are a few pics....

Posted: 4/18/2014 6:13:12 AM EDT

[#1]

How the heck do you upload pics?

Posted: 4/18/2014 6:27:54 AM EDT

[#2]

Quote History

Quoted:
How the heck do you upload pics?

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You have to host them at photo bucket or similar, and post the links to them. Direct uploading to the site is not permitted.

Posted: 4/18/2014 6:59:54 AM EDT

[#3]

Normal.

Posted: 4/18/2014 10:46:10 AM EDT

[#4]

The gold color is completely normal. Scratches not so much, whether thats a big issue or not depends on the severity.Your barrel extension could be slightly canted causing the scratches, id have to see pics to tell you for sure

Posted: 4/18/2014 7:24:09 PM EDT

[#5]

The color markings you are seeking is caused by brass shavings left behind from the cartridge expanding and contracting when the round is fired. This is a normal occurrence as others have mentioned.

Posted: 4/21/2014 7:58:17 PM EDT

[#6]

Prolly normal.
Pics help.

[ARCHIVED THREAD] - Discoloration on bolt/chamber/and barrel lugs normal?

AR-15 » Troubleshooting

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