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Riot control weapon

Image Number 2 for United States Patent #4137893.

A riot control weapon using air pressure to eject inexpensive projectiles om its muzzle. Its velocity, range and impact is adjustable by an air regulator between the compressed air supply and the trigger actuated air valve to suit the needs of the situation. The weapon is a rapid fire rifle, wherein the regulator is adapted to provide instantaneous change to the pressure in the barrel of the rifle while the projectiles are being ejected therefrom, thus changing the range of fire of the rifle.

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