Sonic Blast Killer

From 10 meters away this could kill people. The Thunder Generator uses mixture of liquefied petroleum, cooking gas, and air to create explosions, which in return generate shock waves capable of stunning people from 30 to 100 meters away. At that range, the weapon is absolutely harmless, making people run in panic when they feel the sonic blast hitting their bodies. However, at less than ten meters, the Thunder Generator could either cause permanent damage or kill any person.

This is awesome because it can kill people with sound. I wonder what weaponry they will come out with next.