Originally Posted by M&P15T
M9 mags would not be any different than any other mags. It's just that mags in the Military are far more heavily used, so they wear out much faster.
Cleaning mags (loading and unloading them repeatedly) is only increasing the wear on the springs. You're doing more harm than good.
+1 on that!
You can't fix stupid. Not even with duct tape.