A laser gun is always more fanciful and less explicit. A work of sci-fi that is aimed at children has to go with lasers to avoid the appearance of unacceptable violence.

From railguns to plasma rifles, these futuristic weapons push the boundaries of technology. Discover nine of the most ...

There are several reasons why sci-fi laser weapons will never be possible. For starters, all current weaponized laser technology uses wavelengths of light that are invisible to the human eye.