Modified bolt assembly with forward assist adaptor for accomodating sub caliber ammunition utilized in an AR-15 type firearm
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United States of America Patent
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Nov 26, 2013
Grant Date -
Oct 20, 2011
app pub date -
Mar 23, 2011
filing date -
Apr 15, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A sub caliber action device installable within an upper receiver of an AR-15 type firearm which interfaces with an upper receiver mounted forward assist for use with such as .22 caliber ammunition. The device includes a generally elongated receiver plate exhibiting a generally lengthwise extending notched interior established between extending sides, with the notched interior seating a bolt and a forward assist adaptor in reciprocating fashion along the receiver plate between an end-most location and a forward secured chamber adaptor. The adaptor is reconfigurable to inertially and linearly displace a limited distance relative to the bolt support sleeve during full auto firing mode and which influences the bolt against the chamber adaptor during striking of the bolt supported firing pin by the hammer.
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