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carbon ?

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Old 08-04-2012, 02:28 PM   #1
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Default carbon ?

i picked up used bushmaster ar upper
i went ahead and cleaned it
under hand guard in area towards front sight it has some carbon
ery light but there normal?
2nd picture is polished barrel

new-ar-027.jpg   new-ar-029.jpg  

Last edited by johnfs; 08-04-2012 at 03:25 PM.
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Old 08-04-2012, 07:40 PM   #2
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Obviously there is a slight gas leak coming from the tolerances of the Gas Tube and the Front Sight Assembly as you are aware. However, if it is very light and the weapon is functioning properly "I would not be concerned with it." A lot of ARs do this. If you want to totally stop it if you should think you need to do so. Check the diameter of a few gas tubes and find one that is on the larger tolerance. Or you can remove what looks like in the picture (?) the standard front sight assembly. And get another aftermarket unit that has better tolerances. But as I stated if the weapon is working properly "Do not worry about it!"

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*Patrick Henry

“Americans have the right and advantage of being armed. Unlike the people of other countries, whose leaders are afraid to trust them with arms.”
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Last edited by Sniper03; 08-04-2012 at 07:42 PM.
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