They are used to prevent live ammunition from being loaded into a firearm by blocking the chamber with a dummy cartridge or a chamber plug, which is sometimes wedged into place with the use of a tool, in essence jamming the gun.
They are used to prevent live ammunition from being loaded into a firearm by blocking the chamber with a dummy cartridge. They are used to prevent live ammunition from being loaded into a firearm by blocking the chamber with a chamber plug. A chamber plug is sometimes wedged into place with the use of a tool the gun. This was in essence jamming.