Originally Posted by sbullet
probably an obvious answer, but what makes it so that some mags find use of a regulator? (your sidewinder)
Actually, that is a great question. All normal automags have a built in regulator in the back of the valve and don't need a vert reg like most modern paintball guns.
What I did with that Micromag with the sidewinder reg is take the back of the valve off and replaced it with a cap. There is really no advantage to do this other then saving a little weight and making it look cool. The Sidewinder allows me to control the pressure going to the valve and adjust the velocity. A "Capped" valve needs to have a regulator connected to it so you don't blow the rest of the valve and on/off.
If you ever see an automag with the full valve and a regulator then the automag is most likely being "starved" of air and probably doesn't shoot very fast.
Does that make sense?