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"As head space is going to be defined when the bolt is engage and closed, you pull the striker out of the bolt and that gets rid of the cam action (which is very powerful)"

The engagement faces on...

What's the bet the "qualified personnel" at the proof house did NOT do the "strip bolt / one finger pressure" thing, but inserted "a" gauge and used more than the pressure of one finger before giving...

It can get quite ugly with the P-14.

A LOT of them are classic "mix-masters", having been shunted off to various "interesting, foreign parts", surplussed, randomly reassembled by "less than...