Is the trigger lock sufficient as a safety mechanism?

Is the trigger lock sufficient as a safety mechanism?

Larry Pratt (Executive Director, Gun Owners of America) gives expert video advice on: What is a gun lock?; Do guns come with a safety lock already?; Why is there opposition to gun locks? and more...

Guns are designed in a very safe fashion. They're not going to fire unless you put your finger on the trigger. And even then if you have a pistol there are safeties on the gun that will prevent it from firing until that safety has been removed.