if the integrated regulator had sucked or something, the aftermarket would have stepped in. but since it didn't, the mag never fostered the same 3rd party upgrades, aftermarket and knock offs the cocker did.
i mean lets face it, the cocker is a machinists who made a gun out of what he knew, the mag is a clean sheet of paper engineered gun. obviously no disrespect to either profession or gun, just different ways to skin a cat.