Mr. Eisenberg. The sideplate is marked 20 over here?
Mr. Cunningham. Yes—No. 20 is the sideplate.
Mr. Eisenberg. That is in the diagram.
Mr. Cunningham. No. 42 in the diagram is the trigger. There is a sear arrangement on the trigger, attached to the trigger. If you cock it, the sear arrangement will go up into a notch on the hammer right there, and hold it back—right in here.
Mr. Eisenberg. That is number——
Mr. Cunningham. You see, this is the sear.
Mr. Eisenberg. Mr. Cunningham, could you use numbers?
Mr. Cunningham. Yes. No. 39 is the sear, and the sear is attached to the trigger, which is No. 42 in the diagram.
Mr. Eisenberg. Now, we are referring to the first page of the exhibit.
Mr. Cunningham. When the trigger is pulled on this particular weapon, or if the hammer is drawn back, there is a notch on the hammer which is engaged by the sear. When the hammer is back you have to pull the trigger to disengage the sear mechanism from the hammer. When you pull back and it is in the notch, that is known as single-action firing.