Glad to oblige- yours truly in much younger days, at the end of a 5-round burst at 550 rounds per minute. Note the lack of muzzle rise:
My brother owned one of those until just a couple of months ago. It had become worth so much he just couldn't justify not selling it. On slow fire, that thing was surprisingly accurate at very long distance and was just what the doctor ordered for washing machines, refrigerators, engine blocks, and the like.
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