This personal flamethrower is somehow legal in 49 states
 

The XM42 from Ion Productions is every pyromaniac's dream come true: a personal, portable flamethrower that's (amazingly still) legal everywhere except California. You'll be able to get your own flame on for as little as $700 when the company launche...

http://www.engadget.com/2015/03/19/4...=rss_truncated