I have two 33-round KCI mags that I had teething problems with. They work OK now, but I only use them at the range, I don't use a Glock for my nightstand gun, but if I did, I wouldn't be comfortable betting my life on those KCI mags.
So I'm wondering what the best high-capacity after-market magazines are for the Glock.
There seem to be a few people making Glock magazines now and I haven't kept up with it.
Also - are the drums any good? I haven't researched the drum(s). I know KCI makes a drum, but my 33-round KCI mags had problems, at first at least, so I'm skeptical of the KCI drum.