Abstract: In a firearm having a firing pin and means for propelling the same to firing position, a rotatably mounted sear, and a sear trip holding the sear in the path of the firing pin until the trigger is pressed, releasing the sear trip, and allowing the firing pin to move past the sear to firing position.Also in combination with the sear trip, a safety mechanism having a position to inhibit releasing motion thereof.

Abstract: A firearm having a hammer, firing pin, and trigger, and a movable firing block interposed between the firing pin and the hammer to actuate the firing pin when the hammer falls on it. The firing block is held in position by the trigger only when pressed, and the hammer fails to contact the firing block should it accidentally fall without the trigger being pressed.The hammer upon being cocked pushes the firing block up into firing position. When the trigger is pulled, a firing block stop moves forwardly and prevents the firing block from dropping. The means on the hammer that pushed the firing block up is biassed to retract when the hammer falls, so that the firing action is completely dependent on the trigger.