Apparently some have had issues with the mags dropping on the Shield 45. S&W has redesigned the follower, and they will send you some on request (I bought my Shield last year, and haven't had any issues with mag drop...but I recently contacted S&W and they said they would send me some of the new followers as soon as they are back in stock.) I don't know when they started putting the new followers in mags, but if you do a search there are some posts here that show the new versus the original followers, so you can tell if you need the new ones, or if you already have them.

The only problem I have had is one of my 6 round mags won't consistently lock the slide open when empty. I asked Customer Service about that, and they promptly sent me a new magazine, and told me to keep the problem one. I am curious to see if the new follower will correct that issue, when I get them.