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Extraction and ejection: what goes in must come out, or should.(UP on ARs)

[ILLUSTRATION OMITTED]

As said last time, an extractor is supposed to pull a spent case out of the chamber and the ejector is supposed to set it up to get tossed out the ejection port. Extractors got attention last time, so now it's ejectors.

The ejector is a little metal cylinder under which is a captured spring. It resides on the left side of the bolt face and pushes forward against the case head to tilt the case toward the right (shooter perspective) so the rearward-traveling, and rotating, bolt can let it whiz on out the receiver port. The ejector itself doesn't send the case out, that's from the rim pivoting on the extractor hook.

If there's too much pressure ...

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