OK, so yesterday I picked up my new 9mm shield. Get it home and going to fieldstrip it. Can't operate the slide stop, it won't budge.
I have two other M&P's that have given me no problems.
I tried an empty magazine in the mag well and the slide won't lock back on an empty mag!
What am I doing wrong?
I have two other M&P's that have given me no problems.

I tried an empty magazine in the mag well and the slide won't lock back on an empty mag!
What am I doing wrong?

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