Toy manufacturer Lund and Company Invention with the support of U.S. army has designed the Variable Velocity Weapon System- a gun that fires bullets at variable speeds, allowing shooters to wound, bruise or kill their victims.

"In an interview with NewScientist, Bruce Lund, CEO of Lund and Company Invention, explained the gun mixes a liquid with gas and air in a combustion chamber behind the bullet. The variation of this combination would determine the explosive capability and thus the bullet velocity."

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