The SN was an aircraft-mounted medium machine gun manufactured in Russia during WW2. It fired the same 7.62x54mmR round used in the Mosin-Nagant rifle and with a cyclic rate of 3,600 rounds per minute.
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The SN was an aircraft-mounted medium machine gun manufactured in Russia during WW2. It fired the same 7.62x54mmR round used in the Mosin-Nagant rifle and with a cyclic rate of 3,600 rounds per minute.