Re: laser\'s button has broken !
or find some small plastic that's brittle and you can break off the right size and super glue it? You could take it apart and try to solder on a new switch. It's probably a small Tact switch that you can get out of broken old school VCR's and TV's and stuff like that from behind the buttons. Some have really long pegs too..
Is it a green or cheap red laser?