OK unless you are taking a hammer to the front screen, then you got a problem. hit the end cap of the gun to release the vacuum and have no worries at all, you now have a glass shell containing toxic elements. i have found it pretty hard to rupture a sealed crt unless you have an accident and drop it well you loading it in the trash or trailer. literally you dont have to break the cap off just wear gloves and you can pry one side up and you hears a whistling swoosh sound till it stops and pressure is balanced.