Rotatable firearm bolt
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United States of America Patent
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Mar 7, 2017
Grant Date -
N/A
app pub date -
Jan 19, 2016
filing date -
Jan 19, 2016
priority date (Note) -
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Abstract
A bolt for a firearm having a rotatable head and carrier body has a twisted polygonal keyed interface between the head and carrier body. A neck extending rearward from the head presents the keyed interface with a corresponding bore within the carrier body. This construction reduces torque moments between the head and carrier body as compared to prior art bolts. Camming loads on the neck may be constructed with inverses to create space for tolerance and lubricant.
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