Method for manufacturing a trigger element of a sear mechanism for a firearm
A sear mechanism for a firearm includes a trigger element having one or more contact surfaces on which one or more movable or pivotable components of the sear mechanism selectively contacts or slides. In some embodiments, the trigger element is made by producing an intermediate workpiece of the trigger element by a manufacturing process, and electric discharge machining the intermediate workpiece of the trigger element to provide the contact surfaces.
1. A method for manufacturing a trigger element of a sear mechanism for a firearm, the method comprising:
producing an intermediate workpiece of the trigger element by a manufacturing process; and
electric discharge machining the intermediate workpiece of the trigger element to provide at least one contact surface onto which at least one pivotable element of the sear mechanism selectively contacts.
2. The method of claim 1 ,
wherein the intermediate workpiece includes a trigger sear configured to selectively engage a hammer sear of a hammer element of the sear mechanism; and
wherein electric discharge machining the intermediate workpiece of the trigger element includes electric discharge machining the trigger sear to provide a sear contact surface onto which the hammer sear slides.
3. The method of claim 2 , wherein the trigger sear is cantilevered from a side wall of the trigger element.
4. The method of claim 2 , wherein electric discharge machining the trigger sear comprises:
engaging a metal wire through a sear processing aperture of the intermediate workpiece; and
moving the intermediate workpiece or the wire relative to each other to form the sear contact surface.
5. The method of claim 2 , wherein the sear contact surface includes a first sear contact surface and a second sear contact surface adjoining the first sear contact surface at a predetermined angle.
6. The method of claim 5 , wherein the angle ranges between 70 and 100 degrees.
7. The method of claim 5 , wherein the angle is 90 degrees.
8. The method of claim 1 , wherein electric discharge machining the intermediate workpiece of the trigger element includes electric discharge machining a hammer pad to provide a hammer contact surface onto which a hammer tail of the hammer element slides, the hammer pad configured to selectively engage the hammer tail of the hammer element.
9. The method of claim 8 , wherein electric discharge machining a hammer pad comprises:
arranging a metal wire adjacent the hammer pad of the intermediate workpiece; and
moving the intermediate workpiece or the wire relative to each other to form the hammer contact surface.
10. The method of claim 1 , wherein electric discharge machining the intermediate workpiece of the trigger element includes electric discharge machining a disconnector pad to provide a disconnector contact surface to which a disconnector element of the sear mechanism contacts, the disconnector pad configured to selectively engage the disconnector element.
11. The method of claim 10 , wherein electric discharge machining a disconnector pad comprises:
engaging a metal wire through a disconnector pad processing aperture of the intermediate workpiece; and
moving the intermediate workpiece or the wire relative to each other to form the disconnetor contact surface.