Double fire attachment and method for semi-automatic firearms
OwnerChristopher David Deckardinventor
Life of this patent
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Abstract
Devices and methods of converting semi-automatic firearms to a double-fire mode where a firearm fires a shot upon a single pull of a trigger, and fires a second shot upon a release of the trigger. A clip attachment can be constructed from a single component shaped to fit and mount onto the trigger and extend to protrude between and separate the foot of the safety-sear from the top of the trigger plate affecting the distance between the hammer engaging notch of the safety-sear and the hammer engaging notch of the trigger-sear which allows the firearm to discharge upon release of the trigger. Another version has a spacer pre-built onto a bottom portion of the pivotal safety sear.
Claims19
An attachment device for increasing the firing rate of a semi-automatic firearm having a pullable trigger beneath a mounting plate, and a moveable hammer, a pivotal safety sear with an upper hammer engage notch, and a trigger sear with an upper hammer engage notch above the mounting plate, comprising:
- a separator member for being positioned between a portion of the safety sear and a portion of the mounting plate for causing the hammer engage notch of the safety sear to pivot away from the hammer engage notch of the trigger sear;
- and
- a clip being fixably attached to the separator member for being attached to the trigger, so that pulling and releasing the trigger increases the firing rate of the semi-automatic firearm.
A method of causing a semi-automatic firearm to a double fire mode during a single firing sequence, the firearm having a pullable trigger beneath a mounting plate, and a moveable hammer, a pivotal safety sear with an upper hammer engage notch, and a trigger sear with an upper hammer engage notch above the mounting plate, comprising the steps of:
- increasing space between the upper hammer engage notch of the safety sear and the upper hammer engage notch of the trigger sear;
- and
- pulling the trigger;
- and
- causing a double firing from the fire arm during the pulling and subsequent releasing of the trigger.
An improved pivotal safety sear device for increasing the firing rate of a semi-automatic firearm to a double fire mode, where the firearm has a pullable trigger beneath a mounting plate, and a moveable hammer, the pivotal safety sear device having an upper hammer engage notch, and a trigger sear with an upper hammer engage notch above the mounting plate, the pivotal safety sear device comprising:
- an enlarged foot member for being positioned between a bottom portion of the pivotable safety sear device to one side of a pivot point and a portion of the mounting plate for causing the hammer engage notch of the safety sear device to pivot away from the hammer engage notch of the trigger sear, so that a single sequence of pulling and releasing the trigger causes the semi-automatic firearm to fire twice during the single pulling and releasing sequence.
Dependencies are inferred from the claim text.