Firearm systems and methods
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 8, 2016
Grant Date -
Feb 18, 2016
app pub date -
May 22, 2015
filing date -
Jan 14, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is larger than that of a standard M16/M4. A bolt carrier can have a bolt that has a double cut cam having an unlocking cam surface that has sufficient dwell increase to delay a start of unlocking when the bolt carrier is used in an M4 carbine. A stepped extractor pin may be provided that prevents disengagement of the extractor pin. A tube can be configured to provide gas from a barrel of the firearm to the piston via the carrier key. The tube can have a heat radiator formed from triangular shaped threads on at least a portion of the tube. A piston on the bolt can have a plurality of rings including pairs of mating rings that are formed and maintained as a matched pair.
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