Add another one to the pile, broke within the first mag after I installed a few days ago. As you can see half of it got stuck in the BBH, took me a while to get that out.
As for the WE mags, they are fantastic. The best 2 upgrades I ever did to my glock were installing a guarder mag catch and switching to WE mags.
My G17 was acting sub-par with it's PGC metal slide and only managing around 18 shots on green at 260 FPS. Installed a Guarder metal magazine catch & tested with WE mags, and the results were impressive. WE mag with the new mag catch gets 55 shots on green at 310 FPS. The TM mags were less impressive but they did get a bump, 30 shots & 290FPS.