A trigger lock is a safety device designed to prevent the accidental discharge of a firearm. It works by blocking the trigger, ensuring that the gun cannot be fired until the lock is removed. Trigger locks are often used to secure firearms when they are not in use, helping to promote safe storage practices. These locks are typically made of metal or durable plastic and can be easily applied and removed. Many gun manufacturers provide compatible trigger locks with their firearms, and they are also available for purchase separately. Using a trigger lock is an important step in responsible gun ownership.