Every armorers course I go to this comes up. Every time it is the same answer. I find it funny the people who are trying to save their mags by unloading them every week are actually wearing them out. What is sad is that they use the fact they are loaded all week as the reason why they wore out. Not that they cycled the springs every week for a few years. Mags are essentially expendable items. Most of the time replacing a spring will fix the problem.