If anyone is interested in shooting reduced power loads in the M&P, you might not be aware that aftermarket guide rods and springs for the Glock 17 fit the M&P. I'm running a 13# ISMI spring in my M&P and just received an 11# ISMI spring from Brownells to try in my wife's M&P.
--Lin
Edited to add that a report on the 11# spring is posted below.
--Lin
--Lin
Edited to add that a report on the 11# spring is posted below.
--Lin