Safeties Don't Replace Safe Handling
You should never replace safe firearm handling by trusting the safety on a firearm. A safety is a mechanical device that could fail. Don’t release the safety until just before you shoot.
Knowing where the safety is and how it works is not always as simple as it might seem. There are many types of safeties. Sometimes persons alter or modify their guns to disable the safety. This is very dangerous, especially if the gun gets into the hands of an inexperienced shooter. Be sure you know how the safety works on your own gun or any others you handle. Never alter or modify your firearm yourself. Have an experienced gunsmith look at your gun if the safety does not work or if anything else is wrong with it.