Selective fire firearm systems and methods
First Claim
Patent Images
1. A firearm, comprising:
- a bolt carrier;
a trigger group comprising;
a trigger having a trigger sear, wherein the trigger has a forward position for a fully automatic open bolt mode of operation that is different from a forward position for a semi-automatic closed bolt mode of operation;
a hammer having a notch configured to be engaged by the trigger when the trigger is released in the semi-automatic closed bolt mode of operation for the firearm, anda trigger prop configured to contact the trigger to prevent engagement of the notch by the trigger sear in the fully automatic open bolt mode of operation; and
an open bolt sear configured to block motion of the bolt carrier to prevent firing when the trigger is released in the fully automatic open bolt mode of operation for the firearm.
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Accused Products
Abstract
A selective fire firearm may be provided having a fully automatic open bolt and a semi-automatic closed bolt mode of operation. The firearm may include a trigger group having a trigger prop that ensures that, when the trigger is released in the fully automatic open bolt mode, the bolt carrier stops in an open bolt position held by an open bolt sear. The trigger prop may include a foot that, following a first trigger pull in the fully automatic open bolt mode, slides under and props a rear end of the trigger in a position that allows the open bolt sear to catch the bolt carrier when the trigger is released and propped but prevents the trigger sear from engaging the hammer.
138 Citations
30 Claims
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1. A firearm, comprising:
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a bolt carrier; a trigger group comprising; a trigger having a trigger sear, wherein the trigger has a forward position for a fully automatic open bolt mode of operation that is different from a forward position for a semi-automatic closed bolt mode of operation; a hammer having a notch configured to be engaged by the trigger when the trigger is released in the semi-automatic closed bolt mode of operation for the firearm, and a trigger prop configured to contact the trigger to prevent engagement of the notch by the trigger sear in the fully automatic open bolt mode of operation; and an open bolt sear configured to block motion of the bolt carrier to prevent firing when the trigger is released in the fully automatic open bolt mode of operation for the firearm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A firearm, comprising:
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a bolt carrier; a trigger group comprising; a trigger having a trigger sear, a hammer having a notch configured to be engaged directly by the trigger when the trigger is released in a semi-automatic closed bolt mode of operation for the firearm, and a selector; and an activator configured to cooperate with the selector such that the activator is configured to prevent a movement of the selector from a first position through a second position to a third position unless the activator is activated; and an open bolt sear configured to block motion of the bolt carrier to prevent firing when the trigger is released in a fully automatic open bolt mode of operation for the firearm, wherein the trigger has a forward position for the fully automatic open bolt mode of operation that is different from a forward position for the semi-automatic closed bolt mode of operation. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification