As this is a bumped 2 year old thread, i'll ask if anyone has used the .40 mag of the M&P in the 9mm? If so, how many can you get in?
Holy RESURRECTION!!!! 14 rounds of 9mm in the M&P40 mag. Does depend if your M&P40 mag is 10.5 or if it is right on 10, if so then 13. Mine, 14.

Holy RESURRECTION!!!! 14 rounds of 9mm in the M&P40 mag. Does depend if your M&P40 mag is 10.5 or if it is right on 10, if so then 13. Mine, 14.
This type of thing should be grounds for scrapping the whole Cap Limit.
can anyone comment on extended experience using M&P .40 mags in M&P 9mm?
specifics on capacity, feeding, reliability, any problems and your opinion if it is worth the trouble?




























