Not sure which thread to put this in, so here goes. In the last week I have had four of my Magpul Glock mags take a dump on me. It appears to be spring related. The follower will stay down in a stuck position, and the rounds have no upward push to them. It is tough to say how many rounds are on the mags as I have a pretty big rotation of practice mags. (30ish at a time) I am currently shooting 300 rounds a week and the mags date from Dec 0f 2015, and March 04 2016. I guess I will take them apart and clean them up and see what I can see.