That went south because of the noise they make. They rattle very audibly during trying times. I had one for years and remember it well. I'd have never carried it in action. Plus they added weight at a point you didn't need more, if they were damaged you lost the whole 50 rd capacity. 20s or 30s meant you'd only lose the one. They weren't hard to load but the took a second when you had to go head down to do it. They had a few detractions...