| CPC F41A 5/28 (2013.01) | 19 Claims | 

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               1. A firearm action mechanism comprising: 
            a barrel comprising an internal cavity; 
                a bolt assembly arranged to move along a first axis; 
                a counterweight arranged to move along a second axis; 
                a connector engaged with the bolt assembly and with the counterweight; and 
                a gas block comprising a fluid passageway in fluid communication with the internal cavity, the fluid passageway comprising a first portion and a second portion, the first portion arranged to apply a first force to the bolt assembly in a first direction, the second portion arranged to apply a second force to the counterweight in a second direction; 
                wherein a direction of movement of the bolt assembly is different from a direction of movement of the counterweight. 
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