Errr...for the .40?
I thought concensus was they color coded grey for 9mm, black for .40
Nope. The followers for the compact 9s are gray. I have a full-sized mag with the improved follower. The cartridge sits closer to what it should have initially. The follower will still tilt forward with about six or seven rounds in it, but...
It's a relatively easy fix for the issue they are investigating, but to truly remove the phenomena will require tightening up tolerances on either (one or both depending on cost) the mag and follower to impede the follower tilting forward under load.
I witnessed an M&P 40 have issues immediately after the customer purchased it. The pistol would not feed properly when being shot. I stepped out to the range at his request and noticed the follower tilting which caused the round to hang up on the feed ramp. This is admittedly an EXTREME example and not at all common, but with tolerance stacking eventually one of these will appear. We switched mags and the problem went away.
S&W is rapidly addressing known issues and potential issues and I applaud them for it. Continual Development.
In ten year's time we may have actually caught up to Glock in LE and Public sales - who knows. I'm doing my part. I have two M&P 9s.