I purchased a 9mm M&P Shield and my buddy purchased a 40 cal M&P Shield. I have no problems with my magazine, but with my buddy's 40 cal the extended magazine dropped after every shot or every other shot. His 40 cal short magazine did not have this problem, never dropped.
One other oddity was that I shoot my 9mm about 8" low with windage OK. I shoot my buddy's 40 cal 1" low with windage OK. Not sure what's going on.
Today is Saturday and my buddy intends to call S&W Customer Service regarding the dropping magazine on Monday. Is the magazine or the magazine release?
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