Well I went to the range to day with my 17, 19 and 30. When I was loadind up the ten rounds of .45 in the 30 mags I noticed at about the sixth round it looked like the magazine spread open. I havent noticed this before and it has over 500 round threw it. Loaded both up and went to shoot down range and on the first shot I did not eject, I couldnt pull the slide back but a 1/4 of the way. So after further inspection found that the mags were the issue. They will not hold 10 round any more the last round just pop out. Called glock and im gonna have the mags shiped out tomorrow and the said agter they inspect them they will ship me two new mags. Has anyone ever had these issues with the higher cal mags?