I just got my E-mag back from AGD. While it was there they "upgraded" my superbolt, so I took it out to look at it. Well I reassemble everything and I notice what looks like a thin rubber washer on my table. I figure I had to come out of the marker, but from where. I've never noticed it before. The only place it looks like it fits is between the bolt and the rest of the valve assembly. Anyone know for sure?
Thanx
Thanx

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