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Old November 19, 2012, 03:47 PM   #4
NWPilgrim
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Join Date: September 29, 2008
Location: Oregon
Posts: 2,340
There a different "gun parts" solution for ultrasonic cleaners. I have not tried it on rust though. The us cleaner does NOT seem to remove the hard carbon on my AR15 bolt so I doubt it would get the rust either. I would go the bronze brush and penetrating oil route.
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