What part must generate enough force for the hammer to properly strike the primer?

The hammer spring is crucial because it stores and releases the energy needed to propel the hammer forward with sufficient force to strike the primer of the ammunition. When the trigger is pulled, it releases the hammer, and the hammer spring pushes the hammer down rapidly. This forceful strike is necessary for the primer to ignite the propellant within the cartridge, which in turn fires the bullet. If the hammer spring does not generate enough force, the hammer may not strike the primer effectively, leading to misfires or failure to fire. Other components such as the firing pin, cylinder, and trigger spring have different functions within the firearm mechanism and do not play the primary role in delivering the necessary force for striking the primer.