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Archived [ARCHIVED THREAD] - Carbon build up in trigger group
Posted: 2/27/2007 9:14:45 PM EDT
I am shooting a new upper and have noticed that I am getting a lot of carbon build up on the trigger group. Does anyone know what would cause this?  

Link Posted: 2/27/2007 9:27:05 PM EDT
[#1]
the gas tube spraying carbon back into the gun to cycle the action

it's normal.
Link Posted: 2/27/2007 9:27:58 PM EDT
[#2]

Quoted:
I am shooting a new upper and have noticed that I am getting a lot of carbon build up on the trigger group. Does anyone know what would cause this?  


It gets on your buffer tube too ya know
Link Posted: 2/27/2007 9:32:48 PM EDT
[#3]
Ding dong!  Thanks, it just seems a lot more than my other upper - and that was only after about 60 rounds.

Link Posted: 2/27/2007 9:50:36 PM EDT
[#4]

Quoted:
Ding dong!  Thanks, it just seems a lot more than my other upper - and that was only after about 60 rounds.


You're probably breaking in the upper, and some of the chaffing got off.
Archived [ARCHIVED THREAD] - Carbon build up in trigger group
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