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Posted: 1/13/2006 5:52:48 PM EDT
My friend just bought a new barrelled upper. When you look down the barrel you can see some metal burrs/pieces that look like they are slightly protruding into the barrel from where the gas tube is.

If you run a patch down the barrel you can feel it lightly snag on the metal burrs area.

Is this normal from the manufacturing process?

Will firing a round clear it out?

Should he return it?

Any other suggestions?
Link Posted: 1/13/2006 6:04:09 PM EDT
Discharge 50 rounds, clean, and re-inspect.
Link Posted: 1/13/2006 6:38:52 PM EDT
+1
Link Posted: 1/13/2006 6:43:22 PM EDT
Link Posted: 1/13/2006 6:47:49 PM EDT
Sounds like a burr from when they drilled the gas port. Usually it will not affect accuracy but it will pick up more copper fouling. Shooting will not eliminate the problem. Some barrel makers drive a bullet into this area when they drill the gas port for a backup to avoid a burr. If it is a chrome lined barrel I would not worry about it.
Link Posted: 1/13/2006 6:52:11 PM EDT
Thanks everyone.
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