One of the problems I seem to encounter whenever I use printed magz is that the plate starts to slip off or even breaks and bends at the lip due to pressure of pushing down when enough shells are loaded and this is the revised double lip but still does it. If you use for an example 17 rd. clip but only load 5 or 8 than there's no issue. At the moment I have fully loaded 17 and is holding good so far with this somewhat ok job I just put together. I figured why not share.