Last Spring, S&W offered 2 mags. and $50.00, It took a month for the check, and four months for the mags.
Over the Late Summer, Fall 08, it changed to one or the other, rebate or mags.
It's still a good deal, free mags are IMHO, good as gold with the price and future looming on high capacity mags.
Got mine, than got more.
PS,.. mine was the M+P .40 .