I have some really stubborn carbon on the back on an AR bolt, and correspondingly inside the back of the bolt carrier group where the rear surface of the bolt makes contact with the carrier.
I have scrubbed with bronze brush and patches, can get some off, but not all.
What is the best tool to remove carbon from these 2 locations?
I have scrubbed with bronze brush and patches, can get some off, but not all.
What is the best tool to remove carbon from these 2 locations?