After my last range trip, I'm thinking about adding 2 or 3 external safeties to my Glock 27. I got attacked by 5 year olds carrying pens and other people's fingers. While I was getting ready to shoot my 1911, those same 5 year olds ran off a bit saddened because they couldn't get other people's fingers and pens to fire the gun. I tricked them with my safety. Now I've got to think about method of attachment. I think maybe some super glue, duct tape, and maybe some hot glue.