We had the most reliable greater than 40 round feeding solution on the planet in January. (Our PMAG40 was still more reliable.) We could have released it and done just fine, but...we kept tweaking and testing until we could pass mil-spec dust testing, which wasn't easy. In fact, you'll find a lot of 30 round magazines out there that won't pass mil-spec dust tests, including many that imply military suitability in their claims or marketing. Exactly ZERO drums or true high cap mags would do it in our baseline testing. (the PMAG 40 passes easily, and of course, so do all the 10,20, and 30s)
So...it's a bit later than we thought...but it's a better product for all the time we put into it. The wait for the drum will be over soon.
As for the Glock mags, the PMAG15 for the Glock 19 is coming VERY soon, and there will be more for SHOT and beyond. Although we aren't going to 100% commit, it sounds like some of you will be very happy with what we will have for you.