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Legacy Member
another interesting M1 receiver from WW2 production
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06-11-2022 11:22 AM
# ADS
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Advisory Panel
Neat to find eccentricities... We don't see those here.
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Contributing Member
It was probably caused by a small piece of swarf in the holding jig which prevented the part being clamped in the correct position. Perhaps by a tired operator at the end of a long shift.
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Contributing Member
Is the only issue here that cut around the outside of the heel?
looking at the flat edge on the side, was the cut done with a horizontal milling cutter with the heel sticking up towards the center of the milling arbor?
Also, whats up with the "pitting" on the underside? is it old corrosion or welding?
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Legacy Member
There is still a 50% chance that the firing pin pocket was cut too deep and later repaired by welding and milling to salvage this receiver.
The photo posted by Jesse is not what a normal receiver should look like underneath
Best answer is to have an x-ray which I have considered - just not that easy
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Thank You to RCS For This Useful Post:
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Contributing Member
Originally Posted by
jesse_
Is the only issue here that cut around the outside of the heel?
looking at the flat edge on the side, was the cut done with a horizontal milling cutter with the heel sticking up towards the center of the milling arbor?
Also, whats up with the "pitting" on the underside? is it old corrosion or welding?
Attachment 126961
Jesse-
It looks like chatter from the milling reamer where a piece of steel filing got stuck into the cutting edge of the reamer.
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Legacy Member
receiver tang contour
That outside tang contour is not right
Some extra work was done on this receiver ?
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