I broke one factory follower on my CW40 and replaced it with a Lakeline a couple of years ago. I actually have Lakeline followers for my other two CW40 magazines, just haven't replaced them yet. The Lakeline did get dinged but I have not had an issue with it. Seems to have become self-relieved. The other two factory ones seem OK, but I'm sure it's not a matter of "if" they break but "when".