well, off the top of my head, 350 rounds weighs about eight pounds (3.75 kilos), so 200 (enough for 10 seconds) would be about 4.5 pounds (2 kilos). I'm not using a scale or anything, I'm basicly pulling these numbers out of my ass, but then again my ass is a whole lot smarter than murphy (he he).
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"Victory at any Price!"
SS-Panzergrenadier