I got a couple of KCIs for a 17 at ITP and have loaded them full and run them empty a couple of times with no problems.
[FONT="]NRA Life member [/FONT][FONT="]GSSF member[/FONT]
[FONT="]Gunsite graduate Certified Glock armorer[/FONT]
[FONT="]1911 Mechanic[/FONT]
So you would consider the KCI magazines an acceptable replacement for the Glock Factory mags? I've got a G17 and want a couple of extras and am considering the KCI magazines.