Which of the following components is typically the last to act during the firing process of a bullet?

In the firing process of a bullet, the bullet itself is indeed the last component to act. When a firearm is discharged, the firing sequence begins with the primer, which ignites when struck by the firing pin. This ignition creates a small explosion, igniting the gunpowder (or powder) within the casing. The burning powder produces gas that rapidly expands, driving the bullet down the barrel and out of the muzzle.

Throughout this sequence, the primer acts first by initiating the process, followed by the gunpowder, which generates the force needed to propel the bullet. The casing serves to contain the pressure of the ignition and the expanding gases until they are released through the barrel when the bullet is expelled. Therefore, the bullet, which is propelled out of the barrel only after the primer has ignited the powder and the gas has built up, is the last component to act in the firing sequence. Understanding this sequence is crucial for grasping the mechanics of firearms and their operation.