Grendel Magazines

[Crusty]

I have ASC, CPD and Elanders and all work fine (now). My SOP with a new mag is to take the follower out, smooth the sides of it with sandpaper and ease all sharp edges with a file. The CPD performed noticeably better than the others so I compared it with an ASC (which occasionally misfed and badly scratched my cases) and I noticed that the lip edges on the CPD were not exactly parallel with each other, so I taper filed the ASC lips to match (the gap between the lips is around 1/64" wider at the forward end), beveled and dressed all metal edges near the feed path with a fine file and beveled the forward edge which can catch bullet tips and now it works just as good as the CPD with no scratching.