Originally Posted by Assault Pioneer
sound control usually means it's sound activated, it listens to the whir of your gearbox, then it knows your firing so it winds to keep the flow, my m249's box mag does that
more so the thwack of the piston hitting. I have an m4 box mag that has a tiny microphone at the top of the mag portion. it's sensitive enough that it will wind when you blow on it but when inserted into a mag well, typically starts winding after the first shot and not with the gears, but that's just my experience with these things.
now if I could only get the box mag to not jam requiring a complete breakdown to clear it....