Paintball has become the perfect way for gadget geeks to unleash their inner Rambo. The latest carbon-dioxide- or compressed-air-powered guns, known as “markers,” have computerized controls and electronic firing mechanisms that can blast out 1,200 balls a minute at speeds of up to 300 feet per second. Add in a quick reloader and a sneaky scope, and your buddies won’t stand a chance.

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Now here's a hobby I didn't know existed: members of the North Texas Battle Group build elaborate radio-controlled balsa warships armed to the teeth with CO2-powered BB guns, then launch them in a nearby lake and battle it out. Also on board are pumps to evacuate water taken on after direct hits, independent rudder and propeller assemblies, and an auto-deployed float to help salvage the not-so-fortunate sunken wrecks. And it's not just in Texas—similar clubs are staging regular mini-naval battles around the world. —John Mahoney

Check them out - ntxbg.org

The heavy artillery operates like paintball guns

The pump and motor assemblies

 

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