from what i could gather, and from what my contact in Hong Kong have told me, you just dump the bearings into the chamber, and the action of them rolling around in the chamber is supposed to somehow evenly distribute the liquified gas... y'know... swirl the impurities and temperature around to make sure it's even from top to bottom.
I never realized this till 'tax' mentioned it to me, but the balls get lodged inside the chamber... and don't do anything but take up space after the first couple of mags. I didn't even realize that my mag hasn't been "rattling" for the longest time now...
I suppose the theory is to sustain a more consistent gas output.
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