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الموسم 1، الحلقة 4: For some 500 years following the invention of the gun, the rate at which one could fire has been limited by the time it takes to reload. With the invention of the machine gun, a gun's rate of fire went from two or three shots per minute to 100 shots per second.
Documentary · 30 ديسمبر 2004 · 46 دقائق