(57) A firearm and particularly a gas operated automatic or semi-automatic gun has a receiver
(1) a barrel (10) connected to one end of the receiver, a buttstock (2) connected
to an opposing end of the receiver against a rear wall (131) of the receiver and a
bolt carrier assembly (3) reciprocally mounted and housed within the receiver. In
a gas operated gun a gas system (9) is provided at a predetermined distance along
the barrel for driving the bolt carrier assembly toward the rear wall (131).
A sear actuator, in the invention, has a rotatable cylinder (770) mounted between
opposing sidewalls of the receiver(1) and a slidable rod (771) extending transversely
to the cylinder. The actuator is arranged so that in one position the trigger applies
a rotating force to the sear through the slidable rod (771). In a different position
of the cylinder (770) the slidable rod is moved outofthe path of the force exerted
bythetrigger and the trigger abuts a wall of the cylinder and thus the sear is rendered
inoperative.
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