Quote:
Originally Posted by mnichols
can anyone help me identify if i have "new" or "old" features on my new M&P 9? i read something about notches on the barrel... the date on the test cartridge is 7/10/13. serial # starts with HPR. also, what difference do these features really make? ( this is my first handgun ). thanks in advance.
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Generally speaking, the only major differences as far as I know with the latest batch of m&p's this last year is the a more pronounced trigger reset.
I think the pro series have a newer barrel with a faster twist rate.
Hopefully someone will correct me if i'm wrong.