Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 3, 2009
Patent Application Number
11231063
Date Filed
September 19, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
An M4 type automatic or semi-automatic firearm having an indirect gas operating system. A bolt assembly has a striking surface. The bolt assembly is enclosed within an M4 type receiver assembly. A barrel assembly having a bore is coupled to the receiver assembly. A gas block having a cylinder is fitted to the barrel assembly with the cylinder in communication with the bore. A piston and rod assembly has a piston and a striking rod, with the piston fitted to the cylinder. Gas discharged from a fired cartridge displaces the piston and causes the striking rod to strike the striking surface displacing the bolt assembly.
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