Originally Posted by SSGN_Doc
With the "u" cut at the top they look like old mags that are not fully metal lined. Possibly too much tension for too long. How were they stored? Dry climate? Excessive heat? Near chemicals that would dry out the plastic? You can contact Glock. When I took my 17 back to the factory they replaced all my mags with new ones at no cost.
I guess their about 10- 12 years old, came with the gun , i bought new. I've had them stored both loaded and empty over the years, they usually sit on the top rack of a metal gun cabinet along with some ammo other mags and long guns on the bottom.
I'll contact Glock this week and see what they allow , I really don't want to buy new ones in this climate.