Bolt carriers are made from 8620 not C158.Originally Posted by elephant
I'm concerned if you can case harden like the 8620. There is a lot of stress and friction in the cam pin slot, if not hardened it may deform or gall.
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Senior Member
Bolt carriers are made from 8620 not C158.
I'm concerned if you can case harden like the 8620. There is a lot of stress and friction in the cam pin slot, if not hardened it may deform or gall.
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