I needed a few more of the impact dust covers for my Magpul P-Mags.  I found the one that @smc_246581 had created.  I update that model to be a little thicker on the ears as well as adding some 45 degree chamfers  so it would print with less supports required.  I also updated the dimensions a tad to be a better fitment overall.  Recommend printing with supports in orientation shown in cover photo.