Dry firing at home - Rule 2
Originally Posted by propellerhead
All guns are always loaded!
Never let the muzzle cover anything you are not willing to destroy!
Keep your finger off the trigger until your sights are on the target!1
Always be sure of your target!
You undoubtedly use a designated "safe wall" for your dry fire practice -- masonry construction, or something that will stop a bullet if some day the "unloaded" gun turns out not to be so unloaded. A bullet hole through the TV is not a good thing, nor is a bullet hole through the spouse, child or neighbor on the other side of the wall behind the TV.
That said, watching a laser dot is an excellent training aid, a very cool way to see how much that muzzle really is shaking.