Muzzle rise.......... The very first Sten guns had a spoon billed 'depressor' fitted to the muzzle until those trialling it stated, after testing, that '......it served no purpose whatsoever and was a frill, if not a complete fraud'. The next 4 million didn't have them either because Newton, who discovered the theory of Newtons Laws went most of the way to agreeing with them in the practice.

Then, 50 years later we let my little boy, then aged 9 or so fire hundreds of magazines while the Sten gun was loosly tethered within a steel hoop while he was filmed on a high speed video. It didn't rise or go left or right. It just sat there and blasted away all morning and afternoon. And the more it roared, the more he liked it

Tell your friend to read up on Newtons laws of motion but DON'T believe all you're told either
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