text:  And when I worked on Hawaii Five-0 as an assistant prop master and worked with the armorer to outfit the first team, right, the folks who are the main cast members, to walk up to them and trained in showing them the slide-locked gun that the chamber is empty, this magazine is empty. Also, there's a plug in the barrel. So take a flashlight while pointed down, point it up the barrel, and show that this light is not passing through.