Which safety feature is included on a firing pin that is included in the frame of a double action revolver?

The transfer bar is a critical safety feature often found in double action revolvers, particularly those that do not have a hammer block system. The primary function of the transfer bar is to prevent the firing pin from striking the primer of a cartridge unless the trigger is fully pulled.

In essence, when the trigger is pulled, it moves the transfer bar into place, allowing the firing pin to make contact with the cartridge. If the revolver were to accidentally drop or experience a blow to the frame, the transfer bar will remain in its resting position, effectively blocking the firing pin from moving forward. This design significantly enhances the safety of the firearm by preventing accidental discharges.

Understanding the function of the transfer bar is vital for users to ensure that their revolver operates safely. If the revolver does not have a transfer bar, it may rely on other safety mechanisms, which could present different safety profiles.