Quote:
Originally Posted by The Lettonian
From what I read, it's a two-stage system. The gas is held in the mag, but there's a smaller reservoir in the gun that's used to power the gun. Big tank feeds into little tank, little tank pushes BB/powers blowback. Hence the big gas discharge when they took out the mag - that was supposedly the reservoir in the gun being purged.
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That's a fair amount of wasted gas then...