US Patent 10156410 Trigger mechanism for a firearm

A trigger mechanism for a firearm includes a hammer element pivotable between a ready position and a fired position, and a trigger element pivotable between a first position that retains the hammer element in the ready position, and a second position that releases the hammer element. The hammer element may include a hammer sear having an initial sear surface and a terminal sear surface. The trigger element may include a trigger sear that at least partially engages a portion of the hammer sear when the hammer element is in the ready position.