This is a follow up post related to this mod. I made three mags for my CW45 using the mecgar mags. Initially they fed and fired fine, but would not lock back the slide after the last round. After starting to have the same issue with my kahr mags, I went and got a size 6 torx screwdriver and tightened the slide lock lever spring. Now they all lock back the slide after the last round. Thought this might be helpful info for someone with the same issue.
I've lost my memory, and I can't remember where I put it.