What is a trigger lock?

A trigger lock is a device that is designed to prevent a firearm from being fired. Trigger locks come in a variety of designs, but typically they work by blocking the trigger or retaining the hammer in place so that it cannot be struck. Some trigger locks also include a locking mechanism that prevents the action from being opened, further preventing the gun from being fired. Trigger locks can be an effective way to help prevent accidental shootings, and they are often required by law in certain situations (such as when storing a gun in a home with children). However, it is important to remember that trigger locks are not foolproof and should never be considered as a replacement for responsible gun safety protocols.