Question on 40c mags

Just an update on this:



I called S&W this morning to ask about the difference and they had no idea about the change. They said it sounds like it could be a feed related change, which is what I assumed. I will try to post pics of the two later this afternoon.

Yep... my experience exactly. With my 40C, my original 2 followers have a slightly different slide stop notch shape on the top than the followers than those that came in my 2 subsequently purchased S&W mags. All 4 mags work well.

That's interesting, my followers, springs and floor plate are identical to my full size. What's your serial # Mine is MPN31XX.

Sorry, but the pic is of no use... Well for me, maybe someone can tell the difference.

Do they work?

I haven't had the chance to shoot them yet, but they seem to cycle ammo fine manually. I'm not really worried about them, I was just wondering if anyone knew what the change was for, since S&W didn't.

I see the difference now and so I got mine out too. I have 3, and the original finger extension magazine also has a rounded follower. I have fired well over 300 rounds in each magazine, so it is safe. But that is crazy, must be a model that will be discontinued. The 3rd and purchased finger extension magazine is like the flat base mag, so I am only assuming that these are the newest. Cool catch, glad you brought it to our attention, maybe someone smarter than us will have an answer. :wink:

The area that is different is right next to the part that engages the slide stop... so I think they must have re-thought that engagement surface area a little more and decided that for whatever reason a little curve in that area was better than squared off.... that's my guess...