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Receiver wear from bolt carrier...normal or bad?


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Hey everyone,


So I've put around 500-700 rounds through my m4 (mostly slugs) I'm just curious if the receiver wear from the bolt carrier group I'm seeing is normal or if something is badly aligned.


Any advice would be appreciated.










The second link is probably the best. I'm talking about the center guide/ramp/??? where a bevel has been formed from the bolt carrier group.



*EDIT* Actually I think it's from the barrel as the bolt carrier group doesn't move that far forward....maybe I take my gun apart too much

Edited by Scout_21
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