Everyone else must post with a paper scale bar from now on! What a great idea.
Now you must explain the mechanism around the sear. Safety?
Why is a horizontal sear desribed in books as primitive when it is applied to later English and Dutch locks, when it so refined in earlier Cross bows, wheel locks, snaphaunces, Baltic locks, Mediterranean locks etc? The sear is very refined, it must be only fashion that builders turned away from such a great idea.