Firearm trigger assembly
A firearm trigger assembly is disclosed. The disclosed assembly may include a trigger, a disconnect, and a hammer, each of which may be configured to be spring loaded when installed in a firearm receiver. Installation of the trigger assembly in a firearm receiver may include pivotally coupling the trigger and disconnect to the firearm receiver using a trigger pivot pin, and pivotally coupling the hammer to the firearm receiver using a hammer pivot pin. The trigger may include an integral sear feature configured to provide a mechanical stop to the hammer. The disconnect may be configured to be at least partially located in a disconnect slot located alongside or adjacent to the trigger sear feature when the disconnect is pivotally coupled to the trigger. The disconnect and hammer may each include integral cam features configured to buffer hammer contact during firearm recoil.
1. A hammer for a firearm trigger mechanism, the hammer comprising:
a body having a first end and a second end;
an integral cam feature on the first end of the body;
an integral sear feature adjacent to the integral cam feature;
the second end of the body defining a pivot pin hole, the pivot pin hole having a longitudinal axis;
the second end of the body defining one or more pivot pin retainer apertures adjacent to the pivot pin hole, each pivot pin retainer aperture having a longitudinal axis, wherein each longitudinal axis of the one or more pivot pin retainer apertures is substantially parallel to the longitudinal axis of the pivot pin hole;
a pivot pin configured to insert into the pivot pin hole; and
a pivot pin retainer configured to insert into the one or more pivot pin retainer apertures, wherein the pivot pin retainer is further configured to non-permanently retain the pivot pin in the pivot pin hole.
2. The hammer of claim 1 , wherein the pivot pin enables the hammer to pivotally couple to a firearm receiver.
3. The hammer of claim 1 , wherein the pivot pin includes a groove configured to receive at least a portion of the pivot pin retainer.
4. The hammer of claim 3 , wherein the groove is off-center and near an end of the pivot pin.
5. The hammer of claim 3 , wherein the groove circles a longitudinal axis of the pivot pin.
6. The hammer of claim 1 , wherein the pivot pin retainer is substantially U-shaped and includes two ends.
7. The hammer of claim 6 , wherein the two ends of the substantially U-shaped pivot pin retainer are each configured to insert into distinct pivot pin retainer apertures.
8. The hammer of claim 1 , further comprising a surface adjacent the first end of the body and configured to strike a firing pin of a firearm.
9. The hammer of claim 1 , wherein the integral sear feature is hook-shaped and configured to interact with a firearm trigger sear feature.
10. The hammer of claim 1 , wherein the integral cam feature is curved and configured to interact with a firearm trigger disconnect cam feature.
11. A firearm comprising the hammer of claim 1 .