The following component plays a role in the firing step:

The following component plays a role in the firing step:

• A. Locking Block
• B. Sear
• C. Trigger Return Spring
• D. Extractor

Answer: (B)

In a striker-fired pistol, the firing step is when the stored energy of the striker is released to strike the primer and fire the round. The sear is the part that holds the striker in the cocked position and, when you pull the trigger, moves to disengage the striker. That release is exactly what lets the striker snap forward and ignite the primer, so the sear is the component that directly enables the firing step. The other parts have different roles: the locking block helps keep the breech closed and controls the slide’s locking during cycling, the trigger return spring simply brings the trigger back to its reset position after a shot, and the extractor removes the spent case after firing.

In a striker-fired pistol, the firing step is when the stored energy of the striker is released to strike the primer and fire the round. The sear is the part that holds the striker in the cocked position and, when you pull the trigger, moves to disengage the striker. That release is exactly what lets the striker snap forward and ignite the primer, so the sear is the component that directly enables the firing step. The other parts have different roles: the locking block helps keep the breech closed and controls the slide’s locking during cycling, the trigger return spring simply brings the trigger back to its reset position after a shot, and the extractor removes the spent case after firing.