Abstract: A firearm of the type utilizing a pivoting hammer which either carries or does not carry a firing pin is disclosed herein along with a specific safety latch for use therewith. The safety latch is carried in its entirety by the hammer behind its thumb spur and is movable in a direction perpendicular to the pivotal movement of the hammer between a first safe position and a second firing position. With the latching member in its safe position, it cooperates with the main frame of the firearm for preventing the hammer from any movement. With the latch member in its firing position, the hammer is made free.