I got 2 Wison, 8 rd mags yesterday. During a 100 round session, I got stove pipes on the 7th round on both mags every time. I then notived that the slide stop was binding on the leading edge of the mag. I then noticed that with an empty mag and the slide retracted, it took a lot of force on the slide release to get it to release. I removed the slide stop/release and noticed that the rear face where it contacts the magazine was irregular and not true. I filed and polished it to the extent that it would easily release the slide with an empty mag. I just returned from the range and had zero malfuntions. Hope that helps.