I was thinking the hybrid 20x1 adapter or the lets say a pic of the vented copper point for a battery sleeve for a mech modIt seems like a mech mod switch or a cap for a battery tube. No threading so can't be a 510 and it looks like vent holes.
It makes sense, like the middle part is where the rod comes up to make contact... but if that's the case, wouldn't the metal around it make contact as well? I think you were onto something with the swirl marks, like it's a juice flow mechanism in one of them over engineered rtasI'm sure it's a switch housing or at least it makes sense to be one
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