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President Obama speaks about the BRAIN (Brain Research through Advancing Innovative Neurotechnologies) Initiative on April 2, 2013, in the East Room at the White House. (Associated Press)
Photo by: Charles Dharapak
President Obama speaks about the BRAIN (Brain Research through Advancing Innovative Neurotechnologies) Initiative on April 2, 2013, in the East Room at the White House. (Associated Press)

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Best combat rifles of all time

A combat rifle is a military service rifle that fires a full-power rifle cartridge, a mainstay of every modern army in the world. See the best combat rifles ever made.