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Posted: 12/21/2015 9:27:05 PM EDT
| Is it normal to have a build up of hard crap on bolt assembly just below where the gas rings are? I also noticed that the surface of it is a combination of smooth and not so smooth. Should I leave it or clean it off? |
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That's normal. I always cleaned it off and never had any issues. That was on my issued M16A2. I use Slip 2000 EWL on my AR-15 and don't have that problem anymore. EDIT: The not-so-smooth parts will smooth out in time. Or, you can take a bronze brush to it if you don't like it. My M16A4 was basically brand new had was 100% rough. Never had a problem with it and never cleaned it during the week of the rifle range qualification. |
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Buy a carbon removal tool like the CAT M4 tool from Brownell's. There are several brands of tools on the market. Brownell's sell the best of them.
You can also use a liquid carbon remover like Slip 2000 Carbon Killer, or a "lead-away" type cloth that will wipe carbon and leading off. |
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