What we do is convert Sci-Fi prop weapons to functioning prop laser weapon. We use custom laser modules of different power levels & wavelengths.
Then we install them in the prop. with all the electronics
sound and power effects
If there is room we can put a laser in it.
We have even installed them into props that were not weapons
(ie: Dr. McCoy's Protoplaser from Star Trek TOS)
Please Contact us for special projects ..